I want my users to be able to reply to my... let's call it forum, via email. When something gets posted to a topic they're watching, they get an email. I want them to be able to reply to that email and have my script post a message in the topic as that user.
My forum is written in PHP + Zend and my email provider is Google Apps for Businesses (so GMail).
Is there any way I can fetch all emails sent to a particular address and parse them in PHP (or Python or something else for that matter, as long as it's not C)?
Check this out.
http://code.google.com/p/php-imap/
You can pretty easily set up an environment that accepts the emails and will let you create a script to handle the information and put it in the db manually.
you can connect with IMAP or POP to gmail and fetch emails.