I recently tinkered with my mac to set up my Yahoo Mail with the Mail.app through MacFreePops. And now I changed my mind. I am sticking with gmail instead because I noticed that whenever I send email from my gmail account it automatically set the "Reply-to" to my Yahoo email address because of this procedure through Terminal. I can, however, try to replace this string with my Gmail address but I can't. Because I have three more gmail pop accounts set-up with my Mail. I need to undo this step. I need my mail to revert to the same old mail without mods. I want to undo the default Reply-to and just revert to status quo ante. I am also thinking of uninstalling my Mail and install it again. Will this fix the problem?