In my search for the best PHP mailing list software, I’ve come across some pretty bad ones, and some pretty good ones.

My criteria for a “good PHP mailing list” is the following:
-easy install
-easy integration
-double opt-in subscription
-sends mail even after browser window has closed (imagine waiting for your PHP script to finish sending an email to thousands of subscribers, one at a time).
-customizable admin interface
-open source (and free!)
-not a hosted solution

That may be a dream, but I just found a new PHP mailing list that may meet the criteria. phplist.com may just do the trick. I will try it out and let you know what I think.