public override Task SendEmail(MailRequest request, CancellationToken cancellationToken)
{
ThrowIfNotConfigured();
jobClient.Enqueue <SendSingleQueuedEmailJob>(x => x.Execute(request, CancellationToken.None));
return(Task.CompletedTask);
}
public virtual async Task SendEmail(MailRequest request, CancellationToken cancellationToken)
{
ThrowIfNotConfigured();
var sender = MailboxAddress.Parse(fromAddress);
sender.Name = senderName;
var builder = new BodyBuilder {
HtmlBody = request.HtmlBody, TextBody = request.PlainTextBody
};
if (request.Attachments != null)
{
foreach (var attachment in request.Attachments)
{
builder.Attachments.Add(attachment.Filename, Encoding.UTF8.GetBytes(attachment.Content),
ContentType.Parse(attachment.MimeType));
}
}
var email = new MimeMessage
{
Sender = sender,
Subject = request.Subject,
Body = builder.ToMessageBody(),
};
if (!string.IsNullOrEmpty(request.Bcc))
{
email.Bcc.Add(MailboxAddress.Parse(request.Bcc));
}
if (!string.IsNullOrEmpty(request.Cc))
{
email.Cc.Add(MailboxAddress.Parse(request.Cc));
}
if (!string.IsNullOrEmpty(request.ReplyTo))
{
email.ReplyTo.Add(MailboxAddress.Parse(request.ReplyTo));
}
email.From.Add(sender);
email.To.Add(MailboxAddress.Parse(request.Recipient));
// TODO: batching of email send requests (or perhaps queue sender jobs would be better for this)
using var smtp = new SmtpClient();
SecureSocketOptions connectMode = SecureSocketOptions.StartTls;
if (!requireTls)
{
connectMode = SecureSocketOptions.StartTlsWhenAvailable;
}
// When using ssl port, switch to SSL mode
if (port == 465)
{
connectMode = SecureSocketOptions.SslOnConnect;
}
await smtp.ConnectAsync(host, port, connectMode, cancellationToken);
// Only authenticate if we have a password set
if (!string.IsNullOrEmpty(emailPassword))
{
await smtp.AuthenticateAsync(fromAddress, emailPassword, cancellationToken);
}
logger.LogInformation("Sending email to {Recipient}", request.Recipient);
await smtp.SendAsync(email, cancellationToken);
// If this is canceled here, then it might be possible that a single email is sent twice, but should be
// very rare
await smtp.DisconnectAsync(true, cancellationToken);
}