Little modification of Autoresponder script: http://infinite.ibasics.biz/
Some modifictions:
- It installs on MySQL 5.5 and PHP 5.4
- You can define, to which site it redirects (Opt-In Redirect, Opt-In Confirmation Page Redirect and Opt-Out Redirect)
- A few modifications on GUI
Manual and installation instructions: http://infinite.ibasics.biz/manual.html