If anyone here is experienced with either or both scripts, can you post your reviews?
Insight on the comparison between both products from anyone who has used both would be really helpful.
PHPList is a free option and Interspire Email Marketer is a commercial script. I would be using the software to build opt-in email marketing lists and would be interested in their stability with large lists, tracking abilities, ease of use, etc, etc. Basically anything important to self hosting large email lists.
I might recommend DaDa Mail, especially over PHPList. It’s much more user friendly.
In general, I would never host a mailing list myself if there were over 40 subscribers or so on the list. You may run into problems with your email being flagged as spam unless you configure things on your domain records and mailing list software just right.
If you are looking for long list ,and you have budget , I would recommend Interspire, They are professional, Safe and best of their class.
Only thing is they have commercial license .