Administration tools

This module allows you to set up access to the site on base of request referrer, remote IP address or User Agent with reverse-lookup check of domain name (for searchbots)

The module provides API for other modules to send notification emails.
Install this module only if you use another module which depends on it.
The module provides user interface to edit email address, subject and body template using set of variables.

Managed Newsletters is an advanced taxonomy-driven newsletter system that features multi-level templates, group addressing, multiple newsletters, streamlined workflows, and Bacon Rolls!

This is an extension for the forward module.
The module provides notification to configurable email address about forward operation on the site.

This module provides tokens with login ticket, which can be used in emails for automatic login of users via links from emails.
Admins can build different tokens for different purposes.

This module provides a form for fast user registration with email and username only.
Other modules also can add another fields on this form.
After fast registration, a user is allowed to visit a configurable count of pages, after which the user must fill in the full user profile.