How to check MailMessage was delivered in .NET?

Question

Is there a way to check if SmtpClient successfully delivered an email? SmtpClient.Send() does not appear to return anything other than an exception. So if the method complet

Answer 1

One solution you could use is to create an httphandler for your website images. If you send an HTML message which includes at least 1 image, then you could embed querystring data to the end of that image. This could even be something like a 1x1 transparent image. When the user reads the email, this sends the request to the server to fetch the image data, and in turn, you could capture that request and denote that the message was read.

This is not bulletproof however, because most email clients block images by default unless the user specifies they would like to view images in the email.