Sure no problem - the third party tool was http://www.ihance.com
In short - by adding a BCC address to each email, it will add it to my salesforce.com account attached to the contact I were emailing.
Does this help more?
If this tool is still adding those to your emails, then it obviously wasn't uninstalled. So we need to know where it installed itself and then we can uninstall it and it's dependent files.
Check in Home/Library/Mail/Bundles, /Library/InputManagers, /Library/Internet Plug-Ins, Home/Library/InputManagers, and Home/Library/Internet Plug-Ins for any files related to that tool and list them in your reply.
I did do this with the Genius Bar, but possible we missed something, so here's a list of what was in each folder:
Home/Library/Mail/Bundles > Nothing in this folder
/Library/InputManagers > 1 folder (http://screencast.com/t/YjdiMjRmM) I think unrelated
/Library/Internet Plug-Ins > Several files (http://screencast.com/t/ZTk3M2QyOD) most I know are not related, a few I don't know what they are from.
Home/Library/InputManagers > I don't have this folder
Home/Library/Internet Plug-Ins > 2 Files (http://screencast.com/t/Y2ZhZmM0) I think unrelated
Ok let me know if this makes any sense to you. Thanks!
Yes, those files are all unrelated, and you should delete those. The only other place to look is in /Library/Application Support/ihance (assuming that's what they named that folder) and see what's in there; as well as in Home/Safari/Preferences for the com.ihance.xxxxxx.com and see if deleting that file doesn't help.
Of course, you could also send an email to firstname.lastname@example.org and ask them how to delete everything related to that application, and exactly where all the files are located. You shouldn't have to pay for that, either; uninstalling something should be free, or they need to clearly post all the details on their web site.
/Library/Application Support/ihance doesn't exist, but here's what's in /Library/Application Support > http://screencast.com/t/YjM1NTMyNm (nothing seems related)
Home/Safari > doesn't exist
Trouble shooting with Ihance was my first attempt at fixing this and we went back and forth may times but never fixed it. I've exhausted their ability to help me. That's when I went into Genius bar.
Sorry, I meant to type Home/Library/Preferences, not Home/Safari/Preferences.
It could be that your Mail preferences file is corrupted, in which case the only fix is to delete it and recreate your accounts from scratch. What sort of email accounts are these: POP, or IMAP. It does make a difference, so we need to find that out before doing anything else.
Ah ok Home/Library/Preferences has a lot of files in it, but nothing seems related to ihance.
All of my accounts are POP accounts.
"Mail preferences file is corrupted, in which case the only fix is to delete it and recreate your accounts from scratch." <--- This sounds very much like what the Genius Bar said.
It probably is what they said, but I don't rely on that, because depending on the "Genius", they've been known to be completely wrong on many occasions. I like to verify that other possibilities aren't the real cause first.
So, if you know all your account information to setup the account(s) again, do this:
Quit Mail if it's running.
Go to Home/Library/Preferences and delete the com.apple.mail.plist file.
Restart Mail, setup your accounts again and it will find your existing mailboxes automatically.
Re-set your other Mail preferences the way you want them.
If that solves your problem, you can now empty the Trash.