public async Task Send(SenderRequest request, CancellationToken cancellationToken = default)
{
var configuration = await _senderConfigurationRepository.Retrieve(request.ConfigurationId) ??
throw new MissingConfigurationException(request.ConfigurationId);
_senderRequestValidator.Validate(configuration, request);
var from = request.FromEmail ?? configuration.DefaultFromEmail;
var to = configuration.ToEmail;
var messageBody = GetMessageBody(configuration, request);
await Send(EmailMessage.Create(request, from, to, request.Subject, messageBody), cancellationToken);
}
