Considered feature-complete by its maintainers.
Import users into Drupal, or update existing users, with data from a CSV file (comma separated file). Provides a wide range of features out of the box, and a comprehensive API to customise imports.
This is a module designed to help a dedicated support team provide helpdesk support to users.
Send one off announcement emails to registered users.
Publish the content of a website as an email newsletter. Completely Drupal native, with many features.
Handles email sent by the site which has bounced back.
Component module which provides service to other modules, don't install this unless another module requires it.