For the heck of it, I re-flashed my n810 and Modest Mail still does not work with Gmail IMAP (Claws does).

Addison -- would you mind checking your 'Certificate Manager' under control panel and see if you have a Google certificate?

When I first set up a Gmail IMAP account, it asks to accept a certificate; when I view it, the signature field says 'BAD'. My date/time are correct on the n810, which I know can be a problem sometimes.

But if you are able to check, please let me know on that certificate.