My site will be used to post classified ads. I'm using the basic blog functionality--NOT a classified ad plugin--because users MUST be able to submit their ad via email.
Using the Postie plugin, I've enabled "blog by email" from any address. Submissions do not need to be approved by an admin.
Here's the problem: When a classified ad is submitted via email, there is no way for people to contact the poster unless the poster has SPECIFICALLY included contact information in the original email message body (with a signature, for example).
I need a way to automatically include the sender's email address in the post OR use their email address in place of the post author.