Integrate Piler with Google Apps Free Edition

[Gergely Kis]

A major drawback of the Google Apps Free Edition is that there is no way to centrally back up emails.

Piler could be used as a solution to this problem with the following enhancements: * Use IMAP as the primary email input (opposed to SMTP) (Separate IMAP connection for each user) * Support Google OAUTH authentication. User accounts could be provisioned automatically on first login. * Once the user logged in with Google Auth, his emails can be accessed over IMAP with OAUTH authentication. (This method is used by the SMS Backup + tool on Android, source is available here: https://github.com/jberkel/sms-backup-plus)

[Janos SUTO]

OK, the IMAP polling seems possible. However do you mean that after the user logs in then piler should download, and archive the messages real time? Or is it possible to save a token or alike when the user logs in, then later use that token to periodically download and archive his messages?

[Janos SUTO]

I've made some progress. You can get an access token by OAuth2, and I was able to retrieve my emails.

The plan is that when a user logs in the first time, then he's added to the piler database, and the access token is recorded with the refresh token. Then it's possible to run a periodic polling to download and archive new emails. I'll also note the latest retrieved messaged id, then I can continue downloading+archiving only the new messages.

[Gergely Kis]

Yes, this is exactly what I had in mind. Great progress so quickly!

[Janos SUTO]

I think I'm done. Please download the latest master branch (https://bitbucket.org/jsuto/piler/get/master.tar.gz), and install the piler binaries and the web interface according to the docs. Then as an additional step, follow these instructions:

http://www.mailpiler.org/en/googleappsfree.html

If you have any problems, need help, etc. just reopen the issue, or write to me.