This powerful module allows you to build and maintain mailing lists, and send emails to members on the those lists. Some of the features include:
1) Easy options to generate dynamic lists based on any search criteria you wish.
2) Create and manage multiple mailing lists.
3) Allow members to self-subscribe to lists and or manage their mail settings.
4) Customized unsubscribe links in each outgoing email.
5) Send bulk emails (using cron) in batch sizes and at a frequency you set.
6) Personalize emails based on profile settings.
7) Schedule messages to go out at specified times.
8) Create easy autoresponders, and even a whole series of timed messages.
9) Include HTML and/or specified markup rules in messages.
10) Authenticate via SMTP with either PHPMailer or SwiftMailer.
11) Import your reply-to pop3 account right into your site and instantly sort and process bounces.