Introduction - If you have any usage issues, please Google them yourself
Software introduction
1, debug, modify simple. Modify cfg.pl
2, friendly management interface.
3, the password is encrypted storage, more secure.
4, any illegal attempt to log will be system records, and notify the super user.
5, mail content support HTML.
6, support the super user delete subscriber.
7, the user can unsubscribe list.
8, super users online add users.
Note: this procedure itself has some problems, only for learning purposes