vBMail is a professional mailing list mod with Bounced Mail handling and advanced subscription management features.
vBMail is the perfect solution for any forum who wish to send out large quantities of mail to users on a mailing list. It lets admins and users have fine-grained access to subscriptions, and also automatically handles bounced mail.
Bounced Mail Handling: Once configured, it will (if so desired) automatically track and handle bounced mail. Alternatively, you can manually handle bounced mail if you so wish.
Automatic "Unsubscribe" Link Creation: If the user receiving the mail has access to unsubscribing, a secure link to unsubscribe themselves from the mailing list will be automatically added to the bottom of the mail. It does not require the user to be logged in, so it complies with spam policies set forth by mail providers.
Mail History: Each past sent mail can be viewed at any time from the front-end.
Advanced Subscription Management: Users can quickly and easily (un)subscribe from the mailing list via the mailing list directory, or the admin can manually change the subscription status in the AdminCP.
Bounced Mail Threshold: When an admin-configured number of mails bounce from the same email address, the user is automatically removed from mailing lists and all other email-related vBulletin features, and notified via PM what happened to their account, as well as directions to change their email addresses.