> > ? > > Did this list ever discuss remote e-mail validation - say in regards to > sending HTML aware/enabled e-mail with serialized gifs referred back to a DB > which used the serial number as a key to the e-mail address ? > > That way, if someone reads the e-mail you can tell the e-mail was > 'delivered' ? Maybe follow-up with additional information or something?
You can't depend on anything in regards to email clients. There is no guarantee that the particular client will a) accept HTML based email, b) present the HTML as rendered HTMl, rather than raw text, c) provide any reliable mechanism for providing notification of email 'receipt'. You can't programmatically determine if an email address is valid. You can't determine in any other manner if an email address is valid, other than by receiving an email from that address. Even that doesn't guarantee that the address is *still* valid. It is fully within many many people's powers to create a new email address for each and every correspondance they wish to have. It's not very effective, but it is possible. > Maybe it was another list? Must have been. I don't remember seeing anything here. Of course, I'm not using my regular client, so I can't double-check. -Jeff Lowrey
