How can PHP achieve a one-stop mail landing?

The internal site already has the user data, originally can also be able to do an internal "mail" system, but considering the possible later communication with the external network, still want to support SMTP and POP3
But can PHP's mail server support a one-stop-login feature?
(is the internal site landing, mail server also automatically landed, internal site change users, mail server also changed the user "password, disable a class of")
Is it possible to control the storage of mail (including attachments) by the modules you weave?
Looked, seems to have a hmailserver, can realize I need function? (Code I write it myself, do not know that there is an interface or good access not ...) ）

Reply to discussion (solution)

hMailServer can be set up on your own clothing, the function of the device, if it is?? ? Just need your PHP program and hmailserver to do one? You want the function!

Just put hMailServer installed, looked at the database structure, found that there should be little problem. But found another problem, it seems that hmailserver can be equipped with different front-end webmail, does this mean that all the front-end webmail are actually through POP3 and SMTP to communicate with the Smtp/pop server ah?
Because I'm more obsessed with the storage capabilities of the mail server and want to write my own storage

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