The problem with adding headers and running scripts in response to headers is that it's not very flexible. You can't respond on a message-by-message basis to requests, and if you happen to have multiple accounts, you can't send out a request from the correct one. This point is important, since RFC 2298 says that a person who receives a request must validate that the return path and request address match. It really is a hack. And DSN (delivery receipt) is impossible, because you've got to add parameters to the SMTP commands to make that work.
What we *really* need is an alternative to Mail.app that supports MDN and DSN. :) -- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/macvisionaries. For more options, visit https://groups.google.com/d/optout.
