Is there a chance of losing emails when changing from POP to IMAP? It appears that my Mail account imported the 'Inbox' emails but not the 'Sent' emails. I need to make sure I don't lose either so assume that I need to copy the Inbox emails in Mail and put them back into the Comcast email. Or, is there a better way to do this?
For safety... First Quit Mail, then I'd backup these two Mail folders, by right clicking on them in the Finder, then choose Archive/Compress.
Users/YourUserName/Library/Mail
Users/YourUserName/Library/Mail Downloads
(Could be a different folder here if you chose such in Mail Prefs)
Right click on that Mail folder, choose archive, you'll get everything in the folder, and the folder itself in a file called Mail.zip, move it to a safe place, same for the Mail Downloads folder... only the plist is separate.
/Users/YourUserName/Library/Preferences/com.apple.mail.plist
Then, don't change the account, set up a new IMAP account, after it syncronizes let us know where we are.