Uses php-mailman to integrate the GNU Mailman mailing list manager with WordPress.
This plugin provides an easy, lightweight way to let your users sign up for your MailMan list. You can use it to sign up users for several different lists by creating multiple instances of the widget. Once a user has subscribed, a cookie is stored on their machine to prevent the subscription form for that particular list from displaying. Subscriptions for other lists will display.
The MailMan Widget:
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