Whats the difference between FROM, REPLY-TO, and RETURN-TO?
FROM is the email address your recipient will see in the “Sender” field of the Inbox of their regular mail reader. REPLY-TO is the address that will be used to fill out the TO field if they hit “REPLY” in their regular email reader when reading your message. If REPLY-TO is not given, hitting “REPLY” will use the FROM address to fill in the TO field of the reply. RETURN-TO will not be seen by the recipient, but rather will be the address your email will be returned to if it “bounces”, that is, if it is undeliverable for whatever reason. If RETURN-TO is not given, then the bounceback will usually be addressed to the FROM address. The CustomMailer RETURN-TO supports Variable Envelope Return Paths, allowing you to encode the TO address in the name portion of the RETURN-TO address so as to more easily detect and remove bouncing addresses from your mailing list (see “Tags and macros in RETURN-TO” in the “Tags and Macros” section).
