Amazon SES API v2 examples using AWS SDK for .NET

    /// <summary>
    /// Creates a contact and adds it to the specified contact list.
    /// </summary>
    /// <param name="emailAddress">The email address of the contact.</param>
    /// <param name="contactListName">The name of the contact list.</param>
    /// <returns>The response from the CreateContact operation.</returns>
    public async Task<bool> CreateContactAsync(string emailAddress, string contactListName)
    {
        var request = new CreateContactRequest
        {
            EmailAddress = emailAddress,
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.CreateContactAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Contact with email address {emailAddress} already exists in the contact list {contactListName}.");
            Console.WriteLine(ex.Message);
            return true;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The contact list {contactListName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the contact: {ex.Message}");
        }
        return false;
    }

    /// <summary>
    /// Creates a contact list with the specified name.
    /// </summary>
    /// <param name="contactListName">The name of the contact list.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> CreateContactListAsync(string contactListName)
    {
        var request = new CreateContactListRequest
        {
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.CreateContactListAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Contact list with name {contactListName} already exists.");
            Console.WriteLine(ex.Message);
            return true;
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for contact lists has been exceeded.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the contact list: {ex.Message}");
        }
        return false;
    }

    /// <summary>
    /// Creates an email identity (email address or domain) and starts the verification process.
    /// </summary>
    /// <param name="emailIdentity">The email address or domain to create and verify.</param>
    /// <returns>The response from the CreateEmailIdentity operation.</returns>
    public async Task<CreateEmailIdentityResponse> CreateEmailIdentityAsync(string emailIdentity)
    {
        var request = new CreateEmailIdentityRequest
        {
            EmailIdentity = emailIdentity
        };

        try
        {
            var response = await _sesClient.CreateEmailIdentityAsync(request);
            return response;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Email identity {emailIdentity} already exists.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (ConcurrentModificationException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} is being modified by another operation or thread.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for email identities has been exceeded.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} does not exist.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the email identity: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Creates an email template with the specified content.
    /// </summary>
    /// <param name="templateName">The name of the email template.</param>
    /// <param name="subject">The subject of the email template.</param>
    /// <param name="htmlContent">The HTML content of the email template.</param>
    /// <param name="textContent">The text content of the email template.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> CreateEmailTemplateAsync(string templateName, string subject, string htmlContent, string textContent)
    {
        var request = new CreateEmailTemplateRequest
        {
            TemplateName = templateName,
            TemplateContent = new EmailTemplateContent
            {
                Subject = subject,
                Html = htmlContent,
                Text = textContent
            }
        };

        try
        {
            var response = await _sesClient.CreateEmailTemplateAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Email template with name {templateName} already exists.");
            Console.WriteLine(ex.Message);
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for email templates has been exceeded.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the email template: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Deletes a contact list and all contacts within it.
    /// </summary>
    /// <param name="contactListName">The name of the contact list to delete.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteContactListAsync(string contactListName)
    {
        var request = new DeleteContactListRequest
        {
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.DeleteContactListAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (ConcurrentModificationException ex)
        {
            Console.WriteLine($"The contact list {contactListName} is being modified by another operation or thread.");
            Console.WriteLine(ex.Message);
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The contact list {contactListName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while deleting the contact list: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Deletes an email identity (email address or domain).
    /// </summary>
    /// <param name="emailIdentity">The email address or domain to delete.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteEmailIdentityAsync(string emailIdentity)
    {
        var request = new DeleteEmailIdentityRequest
        {
            EmailIdentity = emailIdentity
        };

        try
        {
            var response = await _sesClient.DeleteEmailIdentityAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (ConcurrentModificationException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} is being modified by another operation or thread.");
            Console.WriteLine(ex.Message);
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while deleting the email identity: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Deletes an email template.
    /// </summary>
    /// <param name="templateName">The name of the email template to delete.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteEmailTemplateAsync(string templateName)
    {
        var request = new DeleteEmailTemplateRequest
        {
            TemplateName = templateName
        };

        try
        {
            var response = await _sesClient.DeleteEmailTemplateAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The email template {templateName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while deleting the email template: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Lists the contacts in the specified contact list.
    /// </summary>
    /// <param name="contactListName">The name of the contact list.</param>
    /// <returns>The list of contacts response from the ListContacts operation.</returns>
    public async Task<List<Contact>> ListContactsAsync(string contactListName)
    {
        var request = new ListContactsRequest
        {
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.ListContactsAsync(request);
            return response.Contacts;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The contact list {contactListName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while listing the contacts: {ex.Message}");
        }

        return new List<Contact>();
    }

    /// <summary>
    /// Sends an email with the specified content and options.
    /// </summary>
    /// <param name="fromEmailAddress">The email address to send the email from.</param>
    /// <param name="toEmailAddresses">The email addresses to send the email to.</param>
    /// <param name="subject">The subject of the email.</param>
    /// <param name="htmlContent">The HTML content of the email.</param>
    /// <param name="textContent">The text content of the email.</param>
    /// <param name="templateName">The name of the email template to use (optional).</param>
    /// <param name="templateData">The data to replace placeholders in the email template (optional).</param>
    /// <param name="contactListName">The name of the contact list for unsubscribe functionality (optional).</param>
    /// <returns>The MessageId response from the SendEmail operation.</returns>
    public async Task<string> SendEmailAsync(string fromEmailAddress, List<string> toEmailAddresses, string? subject,
        string? htmlContent, string? textContent, string? templateName = null, string? templateData = null, string? contactListName = null)
    {
        var request = new SendEmailRequest
        {
            FromEmailAddress = fromEmailAddress
        };

        if (toEmailAddresses.Any())
        {
            request.Destination = new Destination { ToAddresses = toEmailAddresses };
        }

        if (!string.IsNullOrEmpty(templateName))
        {
            request.Content = new EmailContent()
            {
                Template = new Template
                {
                    TemplateName = templateName,
                    TemplateData = templateData
                }
            };
        }
        else
        {
            request.Content = new EmailContent
            {
                Simple = new Message
                {
                    Subject = new Content { Data = subject },
                    Body = new Body
                    {
                        Html = new Content { Data = htmlContent },
                        Text = new Content { Data = textContent }
                    }
                }
            };
        }

        if (!string.IsNullOrEmpty(contactListName))
        {
            request.ListManagementOptions = new ListManagementOptions
            {
                ContactListName = contactListName
            };
        }

        try
        {
            var response = await _sesClient.SendEmailAsync(request);
            return response.MessageId;
        }
        catch (AccountSuspendedException ex)
        {
            Console.WriteLine("The account's ability to send email has been permanently restricted.");
            Console.WriteLine(ex.Message);
        }
        catch (MailFromDomainNotVerifiedException ex)
        {
            Console.WriteLine("The sending domain is not verified.");
            Console.WriteLine(ex.Message);
        }
        catch (MessageRejectedException ex)
        {
            Console.WriteLine("The message content is invalid.");
            Console.WriteLine(ex.Message);
        }
        catch (SendingPausedException ex)
        {
            Console.WriteLine("The account's ability to send email is currently paused.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while sending the email: {ex.Message}");
        }

        return string.Empty;
    }

Run the workflow.

using System.Diagnostics;
using System.Text.RegularExpressions;
using Amazon.SimpleEmailV2;
using Amazon.SimpleEmailV2.Model;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Console;
using Microsoft.Extensions.Logging.Debug;

namespace Sesv2Scenario;

public static class NewsletterWorkflow
{
    /*
      This workflow demonstrates how to use the Amazon Simple Email Service (SES) v2 to send a coupon newsletter to a list of subscribers.
      The workflow performs the following tasks:
     
      1. Prepare the application:
         - Create a verified email identity for sending and replying to emails.
         - Create a contact list to store the subscribers' email addresses.
         - Create an email template for the coupon newsletter.
     
      2. Gather subscriber email addresses:
         - Prompt the user for a base email address.
         - Create 3 variants of the email address using subaddress extensions (e.g., user+ses-weekly-newsletter-1@example.com).
         - Add each variant as a contact to the contact list.
         - Send a welcome email to each new contact.
     
      3. Send the coupon newsletter:
         - Retrieve the list of contacts from the contact list.
         - Send the coupon newsletter using the email template to each contact.
     
      4. Monitor and review:
         - Provide instructions for the user to review the sending activity and metrics in the AWS console.
     
      5. Clean up resources:
         - Delete the contact list (which also deletes all contacts within it).
         - Delete the email template.
         - Optionally delete the verified email identity.

    */

    public static SESv2Wrapper _sesv2Wrapper;
    public static string? _baseEmailAddress = null;
    public static string? _verifiedEmail = null;
    private static string _contactListName = "weekly-coupons-newsletter";
    private static string _templateName = "weekly-coupons";
    private static string _subject = "Weekly Coupons Newsletter";
    private static string _htmlContentFile = "coupon-newsletter.html";
    private static string _textContentFile = "coupon-newsletter.txt";
    private static string _htmlWelcomeFile = "welcome.html";
    private static string _textWelcomeFile = "welcome.txt";
    private static string _couponsDataFile = "sample_coupons.json";

    // Relative location of the resources folder.
    private static string _resourcesFilePathLocation = "../../../../resources/";

    public static async Task Main(string[] args)
    {
        // Set up dependency injection for the Amazon service.
        using var host = Host.CreateDefaultBuilder(args)
            .ConfigureLogging(logging =>
                logging.AddFilter("System", LogLevel.Debug)
                    .AddFilter<DebugLoggerProvider>("Microsoft", LogLevel.Information)
                    .AddFilter<ConsoleLoggerProvider>("Microsoft", LogLevel.Trace))
            .ConfigureServices((_, services) =>
                services.AddAWSService<IAmazonSimpleEmailServiceV2>()
                    .AddTransient<SESv2Wrapper>()
            )
            .Build();

        ServicesSetup(host);

        try
        {
            Console.WriteLine(new string('-', 80));
            Console.WriteLine(new string('-', 80));
            Console.WriteLine("Welcome to the Amazon SES v2 Coupon Newsletter Workflow.");
            Console.WriteLine("This workflow demonstrates how to use the Amazon Simple Email Service (SES) v2 " +
                              "\r\nto send a coupon newsletter to a list of subscribers.");

            // Prepare the application.
            var emailIdentity = await PrepareApplication();

            // Gather subscriber email addresses.
            await GatherSubscriberEmailAddresses(emailIdentity);

            // Send the coupon newsletter.
            await SendCouponNewsletter(emailIdentity);

            // Monitor and review.
            MonitorAndReview(true);

            // Clean up resources.
            await Cleanup(emailIdentity, true);

            Console.WriteLine(new string('-', 80));
            Console.WriteLine("Amazon SES v2 Coupon Newsletter Workflow is complete.");
            Console.WriteLine(new string('-', 80));
            Console.WriteLine(new string('-', 80));
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred: {ex.Message}");
        }
    }

    /// <summary>
    /// Populate the services for use within the console application.
    /// </summary>
    /// <param name="host">The services host.</param>
    private static void ServicesSetup(IHost host)
    {
        _sesv2Wrapper = host.Services.GetRequiredService<SESv2Wrapper>();
    }

    /// <summary>
    /// Set up the resources for the workflow.
    /// </summary>
    /// <returns>The email address of the verified identity.</returns>
    public static async Task<string?> PrepareApplication()
    {
        var htmlContent = await File.ReadAllTextAsync(_resourcesFilePathLocation + _htmlContentFile);
        var textContent = await File.ReadAllTextAsync(_resourcesFilePathLocation + _textContentFile);

        Console.WriteLine(new string('-', 80));
        Console.WriteLine("1. In this step, we will prepare the application:" +
                          "\r\n  - Create a verified email identity for sending and replying to emails." +
                          "\r\n  - Create a contact list to store the subscribers' email addresses." +
                          "\r\n  - Create an email template for the coupon newsletter.\r\n");

        // Prompt the user for a verified email address.
        while (!IsEmail(_verifiedEmail))
        {
            Console.Write("Enter a verified email address or an email to verify: ");
            _verifiedEmail = Console.ReadLine();
        }

        try
        {
            // Create an email identity and start the verification process.
            await _sesv2Wrapper.CreateEmailIdentityAsync(_verifiedEmail);
            Console.WriteLine($"Identity {_verifiedEmail} created.");
        }
        catch (AlreadyExistsException)
        {
            Console.WriteLine($"Identity {_verifiedEmail} already exists.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error creating email identity: {ex.Message}");
        }

        // Create a contact list.
        try
        {
            await _sesv2Wrapper.CreateContactListAsync(_contactListName);
            Console.WriteLine($"Contact list {_contactListName} created.");
        }
        catch (AlreadyExistsException)
        {
            Console.WriteLine($"Contact list {_contactListName} already exists.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error creating contact list: {ex.Message}");
        }

        // Create an email template.
        try
        {
            await _sesv2Wrapper.CreateEmailTemplateAsync(_templateName, _subject, htmlContent, textContent);
            Console.WriteLine($"Email template {_templateName} created.");
        }
        catch (AlreadyExistsException)
        {
            Console.WriteLine($"Email template {_templateName} already exists.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error creating email template: {ex.Message}");
        }

        return _verifiedEmail;
    }

    /// <summary>
    /// Generate subscriber addresses and send welcome emails.
    /// </summary>
    /// <param name="fromEmailAddress">The verified email address from PrepareApplication.</param>
    /// <returns>True if successful.</returns>
    public static async Task<bool> GatherSubscriberEmailAddresses(string fromEmailAddress)
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine("2. In Step 2, we will gather subscriber email addresses:" +
                          "\r\n  - Prompt the user for a base email address." +
                          "\r\n  - Create 3 variants of the email address using subaddress extensions (e.g., user+ses-weekly-newsletter-1@example.com)." +
                          "\r\n  - Add each variant as a contact to the contact list." +
                          "\r\n  - Send a welcome email to each new contact.\r\n");

        // Prompt the user for a base email address.
        while (!IsEmail(_baseEmailAddress))
        {
            Console.Write("Enter a base email address (e.g., user@example.com): ");
            _baseEmailAddress = Console.ReadLine();
        }

        // Create 3 variants of the email address using +ses-weekly-newsletter-1, +ses-weekly-newsletter-2, etc.
        var baseEmailAddressParts = _baseEmailAddress!.Split("@");
        for (int i = 1; i <= 3; i++)
        {
            string emailAddress = $"{baseEmailAddressParts[0]}+ses-weekly-newsletter-{i}@{baseEmailAddressParts[1]}";

            try
            {
                // Create a contact with the email address in the contact list.
                await _sesv2Wrapper.CreateContactAsync(emailAddress, _contactListName);
                Console.WriteLine($"Contact {emailAddress} added to the {_contactListName} contact list.");
            }
            catch (AlreadyExistsException)
            {
                Console.WriteLine($"Contact {emailAddress} already exists in the {_contactListName} contact list.");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error creating contact {emailAddress}: {ex.Message}");
                return false;
            }

            // Send a welcome email to the new contact.
            try
            {
                string subject = "Welcome to the Weekly Coupons Newsletter";
                string htmlContent = await File.ReadAllTextAsync(_resourcesFilePathLocation + _htmlWelcomeFile);
                string textContent = await File.ReadAllTextAsync(_resourcesFilePathLocation + _textWelcomeFile);

                await _sesv2Wrapper.SendEmailAsync(fromEmailAddress, new List<string> { emailAddress }, subject, htmlContent, textContent);
                Console.WriteLine($"Welcome email sent to {emailAddress}.");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error sending welcome email to {emailAddress}: {ex.Message}");
                return false;
            }

            // Wait 2 seconds before sending the next email (if the account is in the SES Sandbox).
            await Task.Delay(2000);
        }

        return true;
    }

    /// <summary>
    ///  Send the coupon newsletter to the subscribers in the contact list.
    /// </summary>
    /// <param name="fromEmailAddress">The verified email address from PrepareApplication.</param>
    /// <returns>True if successful.</returns>
    public static async Task<bool> SendCouponNewsletter(string fromEmailAddress)
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine("3. In this step, we will send the coupon newsletter:" +
                          "\r\n  - Retrieve the list of contacts from the contact list." +
                          "\r\n  - Send the coupon newsletter using the email template to each contact.\r\n");


        // Retrieve the list of contacts from the contact list.
        var contacts = await _sesv2Wrapper.ListContactsAsync(_contactListName);
        if (!contacts.Any())
        {
            Console.WriteLine($"No contacts found in the {_contactListName} contact list.");
            return false;
        }

        // Load the coupon data from the sample_coupons.json file.
        string couponsData = await File.ReadAllTextAsync(_resourcesFilePathLocation + _couponsDataFile);

        // Send the coupon newsletter to each contact using the email template.
        try
        {
            foreach (var contact in contacts)
            {
                // To use the Contact List for list management, send to only one address at a time.
                await _sesv2Wrapper.SendEmailAsync(fromEmailAddress,
                    new List<string> { contact.EmailAddress },
                    null, null, null, _templateName, couponsData, _contactListName);
            }

            Console.WriteLine($"Coupon newsletter sent to contact list {_contactListName}.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error sending coupon newsletter to contact list {_contactListName}: {ex.Message}");
            return false;
        }

        return true;
    }

    /// <summary>
    /// Provide instructions for monitoring sending activity and metrics.
    /// </summary>
    /// <param name="interactive">True to run in interactive mode.</param>
    /// <returns>True if successful.</returns>
    public static bool MonitorAndReview(bool interactive)
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine("4. In step 4, we will monitor and review:" +
                          "\r\n  - Provide instructions for the user to review the sending activity and metrics in the AWS console.\r\n");

        Console.WriteLine("Review your sending activity using the SES Homepage in the AWS console.");
        Console.WriteLine("Press Enter to open the SES Homepage in your default browser...");
        if (interactive)
        {
            Console.ReadLine();
            try
            {
                // Open the SES Homepage in the default browser.
                Process.Start(new ProcessStartInfo
                {
                    FileName = "https://console.aws.amazon.com/ses/home",
                    UseShellExecute = true
                });
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error opening the SES Homepage: {ex.Message}");
                return false;
            }
        }

        Console.WriteLine("Review the sending activity and email metrics, then press Enter to continue...");
        if (interactive)
            Console.ReadLine();
        return true;
    }

    /// <summary>
    /// Clean up the resources used in the workflow.
    /// </summary>
    /// <param name="verifiedEmailAddress">The verified email address from PrepareApplication.</param>
    /// <param name="interactive">True if interactive.</param>
    /// <returns>Async task.</returns>
    public static async Task<bool> Cleanup(string verifiedEmailAddress, bool interactive)
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine("5. Finally, we clean up resources:" +
                          "\r\n  - Delete the contact list (which also deletes all contacts within it)." +
                          "\r\n  - Delete the email template." +
                          "\r\n  - Optionally delete the verified email identity.\r\n");

        Console.WriteLine("Cleaning up resources...");

        // Delete the contact list (this also deletes all contacts in the list).
        try
        {
            await _sesv2Wrapper.DeleteContactListAsync(_contactListName);
            Console.WriteLine($"Contact list {_contactListName} deleted.");
        }
        catch (NotFoundException)
        {
            Console.WriteLine($"Contact list {_contactListName} not found.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error deleting contact list {_contactListName}: {ex.Message}");
            return false;
        }

        // Delete the email template.
        try
        {
            await _sesv2Wrapper.DeleteEmailTemplateAsync(_templateName);
            Console.WriteLine($"Email template {_templateName} deleted.");
        }
        catch (NotFoundException)
        {
            Console.WriteLine($"Email template {_templateName} not found.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error deleting email template {_templateName}: {ex.Message}");
            return false;
        }

        // Ask the user if they want to delete the email identity.
        var deleteIdentity = !interactive ||
            GetYesNoResponse(
                $"Do you want to delete the email identity {verifiedEmailAddress}? (y/n) ");
        if (deleteIdentity)
        {
            try
            {
                await _sesv2Wrapper.DeleteEmailIdentityAsync(verifiedEmailAddress);
                Console.WriteLine($"Email identity {verifiedEmailAddress} deleted.");
            }
            catch (NotFoundException)
            {
                Console.WriteLine(
                    $"Email identity {verifiedEmailAddress} not found.");
            }
            catch (Exception ex)
            {
                Console.WriteLine(
                    $"Error deleting email identity {verifiedEmailAddress}: {ex.Message}");
                return false;
            }
        }
        else
        {
            Console.WriteLine(
                $"Skipping deletion of email identity {verifiedEmailAddress}.");
        }

        return true;
    }

    /// <summary>
    /// Helper method to get a yes or no response from the user.
    /// </summary>
    /// <param name="question">The question string to print on the console.</param>
    /// <returns>True if the user responds with a yes.</returns>
    private static bool GetYesNoResponse(string question)
    {
        Console.WriteLine(question);
        var ynResponse = Console.ReadLine();
        var response = ynResponse != null && ynResponse.Equals("y", StringComparison.InvariantCultureIgnoreCase);
        return response;
    }

    /// <summary>
    /// Simple check to verify a string is an email address.
    /// </summary>
    /// <param name="email">The string to verify.</param>
    /// <returns>True if a valid email.</returns>
    private static bool IsEmail(string? email)
    {
        if (string.IsNullOrEmpty(email))
            return false;
        return Regex.IsMatch(email, @"^[^@\s]+@[^@\s]+\.[^@\s]+$", RegexOptions.IgnoreCase);
    }
}

Wrapper for service operations.

using System.Net;
using Amazon.SimpleEmailV2;
using Amazon.SimpleEmailV2.Model;

namespace Sesv2Scenario;

/// <summary>
/// Wrapper class for Amazon Simple Email Service (SES) v2 operations.
/// </summary>
public class SESv2Wrapper
{

    private readonly IAmazonSimpleEmailServiceV2 _sesClient;

    /// <summary>
    /// Constructor for the SESv2Wrapper.
    /// </summary>
    /// <param name="sesClient">The injected SES v2 client.</param>
    public SESv2Wrapper(IAmazonSimpleEmailServiceV2 sesClient)
    {
        _sesClient = sesClient;
    }

    /// <summary>
    /// Creates a contact and adds it to the specified contact list.
    /// </summary>
    /// <param name="emailAddress">The email address of the contact.</param>
    /// <param name="contactListName">The name of the contact list.</param>
    /// <returns>The response from the CreateContact operation.</returns>
    public async Task<bool> CreateContactAsync(string emailAddress, string contactListName)
    {
        var request = new CreateContactRequest
        {
            EmailAddress = emailAddress,
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.CreateContactAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Contact with email address {emailAddress} already exists in the contact list {contactListName}.");
            Console.WriteLine(ex.Message);
            return true;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The contact list {contactListName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the contact: {ex.Message}");
        }
        return false;
    }

    /// <summary>
    /// Creates a contact list with the specified name.
    /// </summary>
    /// <param name="contactListName">The name of the contact list.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> CreateContactListAsync(string contactListName)
    {
        var request = new CreateContactListRequest
        {
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.CreateContactListAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Contact list with name {contactListName} already exists.");
            Console.WriteLine(ex.Message);
            return true;
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for contact lists has been exceeded.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the contact list: {ex.Message}");
        }
        return false;
    }

    /// <summary>
    /// Creates an email identity (email address or domain) and starts the verification process.
    /// </summary>
    /// <param name="emailIdentity">The email address or domain to create and verify.</param>
    /// <returns>The response from the CreateEmailIdentity operation.</returns>
    public async Task<CreateEmailIdentityResponse> CreateEmailIdentityAsync(string emailIdentity)
    {
        var request = new CreateEmailIdentityRequest
        {
            EmailIdentity = emailIdentity
        };

        try
        {
            var response = await _sesClient.CreateEmailIdentityAsync(request);
            return response;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Email identity {emailIdentity} already exists.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (ConcurrentModificationException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} is being modified by another operation or thread.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for email identities has been exceeded.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} does not exist.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
            throw;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the email identity: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Creates an email template with the specified content.
    /// </summary>
    /// <param name="templateName">The name of the email template.</param>
    /// <param name="subject">The subject of the email template.</param>
    /// <param name="htmlContent">The HTML content of the email template.</param>
    /// <param name="textContent">The text content of the email template.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> CreateEmailTemplateAsync(string templateName, string subject, string htmlContent, string textContent)
    {
        var request = new CreateEmailTemplateRequest
        {
            TemplateName = templateName,
            TemplateContent = new EmailTemplateContent
            {
                Subject = subject,
                Html = htmlContent,
                Text = textContent
            }
        };

        try
        {
            var response = await _sesClient.CreateEmailTemplateAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Email template with name {templateName} already exists.");
            Console.WriteLine(ex.Message);
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for email templates has been exceeded.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the email template: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Deletes a contact list and all contacts within it.
    /// </summary>
    /// <param name="contactListName">The name of the contact list to delete.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteContactListAsync(string contactListName)
    {
        var request = new DeleteContactListRequest
        {
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.DeleteContactListAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (ConcurrentModificationException ex)
        {
            Console.WriteLine($"The contact list {contactListName} is being modified by another operation or thread.");
            Console.WriteLine(ex.Message);
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The contact list {contactListName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while deleting the contact list: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Deletes an email identity (email address or domain).
    /// </summary>
    /// <param name="emailIdentity">The email address or domain to delete.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteEmailIdentityAsync(string emailIdentity)
    {
        var request = new DeleteEmailIdentityRequest
        {
            EmailIdentity = emailIdentity
        };

        try
        {
            var response = await _sesClient.DeleteEmailIdentityAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (ConcurrentModificationException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} is being modified by another operation or thread.");
            Console.WriteLine(ex.Message);
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The email identity {emailIdentity} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while deleting the email identity: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Deletes an email template.
    /// </summary>
    /// <param name="templateName">The name of the email template to delete.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteEmailTemplateAsync(string templateName)
    {
        var request = new DeleteEmailTemplateRequest
        {
            TemplateName = templateName
        };

        try
        {
            var response = await _sesClient.DeleteEmailTemplateAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The email template {templateName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while deleting the email template: {ex.Message}");
        }

        return false;
    }

    /// <summary>
    /// Lists the contacts in the specified contact list.
    /// </summary>
    /// <param name="contactListName">The name of the contact list.</param>
    /// <returns>The list of contacts response from the ListContacts operation.</returns>
    public async Task<List<Contact>> ListContactsAsync(string contactListName)
    {
        var request = new ListContactsRequest
        {
            ContactListName = contactListName
        };

        try
        {
            var response = await _sesClient.ListContactsAsync(request);
            return response.Contacts;
        }
        catch (NotFoundException ex)
        {
            Console.WriteLine($"The contact list {contactListName} does not exist.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while listing the contacts: {ex.Message}");
        }

        return new List<Contact>();
    }

    /// <summary>
    /// Sends an email with the specified content and options.
    /// </summary>
    /// <param name="fromEmailAddress">The email address to send the email from.</param>
    /// <param name="toEmailAddresses">The email addresses to send the email to.</param>
    /// <param name="subject">The subject of the email.</param>
    /// <param name="htmlContent">The HTML content of the email.</param>
    /// <param name="textContent">The text content of the email.</param>
    /// <param name="templateName">The name of the email template to use (optional).</param>
    /// <param name="templateData">The data to replace placeholders in the email template (optional).</param>
    /// <param name="contactListName">The name of the contact list for unsubscribe functionality (optional).</param>
    /// <returns>The MessageId response from the SendEmail operation.</returns>
    public async Task<string> SendEmailAsync(string fromEmailAddress, List<string> toEmailAddresses, string? subject,
        string? htmlContent, string? textContent, string? templateName = null, string? templateData = null, string? contactListName = null)
    {
        var request = new SendEmailRequest
        {
            FromEmailAddress = fromEmailAddress
        };

        if (toEmailAddresses.Any())
        {
            request.Destination = new Destination { ToAddresses = toEmailAddresses };
        }

        if (!string.IsNullOrEmpty(templateName))
        {
            request.Content = new EmailContent()
            {
                Template = new Template
                {
                    TemplateName = templateName,
                    TemplateData = templateData
                }
            };
        }
        else
        {
            request.Content = new EmailContent
            {
                Simple = new Message
                {
                    Subject = new Content { Data = subject },
                    Body = new Body
                    {
                        Html = new Content { Data = htmlContent },
                        Text = new Content { Data = textContent }
                    }
                }
            };
        }

        if (!string.IsNullOrEmpty(contactListName))
        {
            request.ListManagementOptions = new ListManagementOptions
            {
                ContactListName = contactListName
            };
        }

        try
        {
            var response = await _sesClient.SendEmailAsync(request);
            return response.MessageId;
        }
        catch (AccountSuspendedException ex)
        {
            Console.WriteLine("The account's ability to send email has been permanently restricted.");
            Console.WriteLine(ex.Message);
        }
        catch (MailFromDomainNotVerifiedException ex)
        {
            Console.WriteLine("The sending domain is not verified.");
            Console.WriteLine(ex.Message);
        }
        catch (MessageRejectedException ex)
        {
            Console.WriteLine("The message content is invalid.");
            Console.WriteLine(ex.Message);
        }
        catch (SendingPausedException ex)
        {
            Console.WriteLine("The account's ability to send email is currently paused.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while sending the email: {ex.Message}");
        }

        return string.Empty;
    }
}