You may be already known that Google open a lot of API for it's application including; Google Map, Google Mail, Google Translate and many others, Yahoo! did too.
Sadly since this article is being written, there is no Google groups API and Yahoo! groups API. So sad.
So how the group based website such as Grouply retrieve the messages from groups? Are they using Mail API to retrieve groups messages? Well this is also possible but it will be so hard, as I think. Or Grouply build it's own API manually from scratch to communicate with Google and Yahoo! groups?
I'm still imagine how to retrieve those messages to my web application. Still thinking and finding idea.
You, do you have problem just like me? Have you solve it? Please let me know, how.