>Hi, may I know how to check wether the email is received by recipient after my program sent email to recipient? Please advice.

Hi Wang,

As far as I know, there's a protocol for this, as you can send a "return receipt request" with outlook and other clients, so you might have to write some code to actually receive this receipt and process it (you might be writing an email client from scratch, or perhaps you could use outlook automation for this), but I've never implemented anything like this, so it's just an idea.

Another idea would be to put your message on a web server and send the recipient just a link to it. From there, you can (probably) easily check whether someone went to the web site and retrieved the message.

Alex