Emailer Custom Mail Headers
(an unsupported* feature hack to Emailer 2.0)
It is possible to include custom headers in the messages that you send from Emailer. There are many reasons why one might want to do this. If you currently don't know why, then you most likely do not need to do this...
OK, here's an example: you might want to include a Precedence: List header so that messages you send to large groups can be processed by the recipients (they could have a mail action that sets list mail to a low priority).
How it works
The hack works by adding your new custom headers to an existing header field in Emailer. The existing header field, x-mailer , is included in all outgoing messages that you send. Therefore, all of the new headers that you add are also included in all of your outgoing messages.
Important: If you wish to send different headers for some messages (such as those sent from a home account vs. a work account), you will need to create two copies of the Emailer application, and modify each copy individually.
How to do it
From now on, every message you send with this copy of Emailer will contain the new header(s).
*Apparently Necessary Legal Stuff
This package is not released and not supported by Claris Corporation in any way (real or imaginary) at any point in time (past, present, and future). Use of these files and information contained within is entirely at the risk of that user, and I, Claris, Fog City, and everyone else you would like to blame will not be held responsible. Unless, of course, the result is positive (i.e. achieving greater productivity, winning the lottery, establishing world peace, ...) in which case I will gladly take some of the credit :-)