Maik Nergert writes: >is there a simple way to proof, that a message and the attachment was >delivered to the recipient? >It would be much better if the recipient has to confirm, that the >message arrived and he has read it.
SMTP, by definition cannot do this. It cannot even guarantee delivery. That said, there are specific implementations of email clients that can acknowledge delivery, and even being opened. However, that is very client dependent, and you cannot count on what client will be used to read the email. Again, that said, if you can enforce the client chosen (like at work having a company mandate), then you might be able to include control tags in the email header produced that will cause that client to perform that feature. /jeff ________________________________________________________________________ The information contained in this e-mail is for the exclusive use of the intended recipient(s) and may be confidential, proprietary, and/or legally privileged. Inadvertent disclosure of this message does not constitute a waiver of any privilege. If you receive this message in error, please do not directly or indirectly use, print, copy, forward, or disclose any part of this message. Please also delete this e-mail and all copies and notify the sender. Thank you. ________________________________________________________________________ --------- RT 4.4 and RTIR training sessions, and a new workshop day! https://bestpractical.com/training * Boston - October 24-26 * Los Angeles - Q1 2017