PHP : Tutorials

[EQTitan]

Looking for good PHP tutorials that involve making a mailing list, that can send mail to multiple users, as well as a single address. Must also have the ability to send plain text ot HTML.

Unless someone knows of a good free script.

Thanks in advance

 

[AdamDuritz99]

oscommerce.com

it's a php based shopping cart store, and has newsletter support.