how to configure internet email accounts on my website in php

I would like to implement a functionality on my website so users can configure their email accounts and start sending n receiving emails (Pretty much like what gmail did ). Can some one shed some light on how to achieve thi开发者_C百科s?

Thanks

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Configure your mailserver to use a database backend. your php application connects to the same database and creates user accounts etc.

more details here: How to communicate with a mail server through a web application