Works great!

UPDATE: preview of attachments is working again. Perhaps the problem was with my CHROME browser. Everything is working perfectly again.

I really like this app. I have been using it for quite a while. Unfortunately, the preview of attachments no longer works. When I go to try to view an attachment that I received or sent I can no longer view the file without downloading. The preview function does not work. It just displays an icon that says: loading… This renders this app useless to me. Hoping support will get back to me. For now I am back to using the browser interface.

JAY-BEE-TWO about MailTab Pro for Gmail - Email Client