Google reads your emails, in case you did not know that. Unless you are sending an email containing content Google can extract and add to its vast database of personal information, Google has no use for it.
Google Mail is becoming progressively useless. It won't accept .zip attachments, at least not the last time I tried, it will eventually prevent you from using an email client unless you visit their web mail interface, and it will disable your account if you attempt to log in from someplace Google deems is not where Google thinks you ought to be.
Gmail is worth every cent you paid.
Get rid of MacKeeper. It is capable of doing nothing beneficial and will only cause problems.