public async Task <MailServiceError> SendMailAsync(MailInfo mail, CallBackInfo callback, CancellationToken cancellationToken)
{
if (mail == null)
{
throw new ArgumentNullException(nameof(mail));
}
MailServiceError checkMail = mail.Check();
if (checkMail == MailServiceError.Ok)
{
MailData mailData = new MailData(mail, callback);
using (var trx = this.StateManager.CreateTransaction())
{
await this.mailQueue.EnqueueAsync(trx, mailData);
await trx.CommitAsync();
}
}
return(checkMail);
}
