# SquirrelMail Internals

This dir has some assorted bits of documentation about SquirrelMail internals, useful for people that want to change or extend SquirrelMail.

More information about SquirrelMail development can be found on our website and via the squirrelmail-devel@lists.sourceforge.net mailinglist (requires subscription before you can post).

Plugin hooks and functions

Addressbook internals

Mailbox tree functions

List of RFC documents used in SquirrelMail

MIME bodystructure handling

Creating compose links the right way