Even better instructions are here:
http://www.squirrelmail.org/wiki/en_US/EmbeddedSquirrelMailLogin
if you need to use the same session started by another application, you're
on your own. you'll want to start by looking at how SM authenticates its
users, which begins in src/redirect.php. i sugg
I know this is probably not what you may be referring to but you can make it
so users can login to their webmail via the home page of your site or a
custom page you create instead of using the squirrelmail login page. You
just need to insert a username and password form fields in your page and us
