Use CreateEmailIdentity with an AWS SDK

    /// <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;
        }
    }

    try {
      CreateEmailIdentityRequest createEmailIdentityRequest = CreateEmailIdentityRequest.builder()
          .emailIdentity(verifiedEmail)
          .build();
      sesClient.createEmailIdentity(createEmailIdentityRequest);
      System.out.println("Email identity created: " + verifiedEmail);
    } catch (AlreadyExistsException e) {
      System.out.println("Email identity already exists, skipping creation: " + verifiedEmail);
    } catch (NotFoundException e) {
      System.err.println("The provided email address is not verified: " + verifiedEmail);
      throw e;
    } catch (LimitExceededException e) {
      System.err
          .println("You have reached the limit for email identities. Please remove some identities and try again.");
      throw e;
    } catch (SesV2Exception e) {
      System.err.println("Error creating email identity: " + e.getMessage());
      throw e;
    }

def main():
    """
    The main function that orchestrates the execution of the workflow.
    """
    print(INTRO)
    ses_client = boto3.client("sesv2")
    workflow = SESv2Workflow(ses_client)
    try:
        workflow.prepare_application()
        workflow.gather_subscriber_email_addresses()
        workflow.send_coupon_newsletter()
        workflow.monitor_and_review()
    except ClientError as e:
        print_error(e)
    workflow.clean_up()



class SESv2Workflow:
    """
    A class to manage the SES v2 Coupon Newsletter Workflow.
    """

    def __init__(self, ses_client, sleep=True):
        self.ses_client = ses_client
        self.sleep = sleep


        try:
            self.ses_client.create_email_identity(EmailIdentity=self.verified_email)
            print(f"Email identity '{self.verified_email}' created successfully.")
        except ClientError as e:
            # If the email identity already exists, skip and proceed
            if e.response["Error"]["Code"] == "AlreadyExistsException":
                print(f"Email identity '{self.verified_email}' already exists.")
            else:
                raise e

        match self
            .client
            .create_email_identity()
            .email_identity(self.verified_email.clone())
            .send()
            .await
        {
            Ok(_) => writeln!(self.stdout, "Email identity created successfully.")?,
            Err(e) => match e.into_service_error() {
                CreateEmailIdentityError::AlreadyExistsException(_) => {
                    writeln!(
                        self.stdout,
                        "Email identity already exists, skipping creation."
                    )?;
                }
                e => return Err(anyhow!("Error creating email identity: {}", e)),
            },
        }