FireAndForgetHandler.cs

public class FireAndForgetHandler
{
    private readonly IEmailService _emailService;
    private readonly ILogger _logger;

    public FireAndForgetHandler(IEmailService emailService, ILogger logger)
    {
        _emailService = emailService;
        _logger = logger;
    }

    public void HandleNotification(INotification notification)
    {
        try
        {
            _emailService.SendMessage(notification.Message);
        }
        catch (Exception e)
        {
            _logger.Log(e);
        }
    }
}