What's the quickest way to gather gmail email data for a php web app?

Question

I'm looking at the gmail api's and I'm not sure which one will allow me access to user's email data with the least amount of coding effort.

I've never used zend or google's oauth features - this makes learning the OAuth access to IMAP and SMTP options somewhat time consuming. I'm considering the atom feed, but I'm not using this with a reader/aggregator, (using a custom filter webapp), so I'm not sure which one to use.

Any recommendations would be appreciated.

Answer 1

If the user is already logged in, you can parse an ATOM feed of their inbox. https://mail.google.com/mail/feed/atom/

Info here: http://code.google.com/apis/gmail/docs/