Sometimes, McAfee won’t be completely removed if, before, you do not uninstall Avast, including the use of its “Uninstall Application” if necessary (www.avast.com/eng/faq-install-uninstall-avast.html).
I just solved it
I uninstalled Avast and install Thunderbird, I got all my inboxes.
McAfee is still there.
Anyway I’ll try to remove McAfee completely and try Avast.
Problem is I got Malware hidden somewhere and none of the AVs are able to find out. I found Avast recommended for it and that is why I just wanted to give it a go.