Mail

This module utilizes email to subscribe and unsubscribe users from a listserv that is defined by an administrator. It creates two blocks(subscribe and unsubscribe) that gives users the abiltity to enter their email address to subscribe and unsubscribe from a listserv.

The module also allows other modules to use the listserv_listserv_subscription function to subscribe and unsubscribe a user from their modules.

What is Ubercart Abandoned Cart and Order Reminders?

This module allows you to send reminder e-mail notifications to customers who have abandoned a cart or order on your site. The notification template can be customized to your needs, and you may choose to enable notifications for abandoned carts and abandoned order independently.

Features

• Sends notifications for abandoned cards (for logged in users only) and for abandoned orders (logged in users or those who have entered and email address)
• Configurable delay for when a cart is considered abandoned
• Can be linked to a Boolean user profile field to allow users to opt-out of future notifications; see the README.txt file for details
• User activity (updating cart, checking out a new order or order submission) automatically suppresses notifications on older abandoned carts and orders, preventing duplicate or needless notifications
• Uses a Rules-based action set for better user control over how notifications get sent

Synopsis

This module changes Drupal email sending behaviour, sending them through Sendwithus' cloud-based email delivery services by using their Web API instead of SMTP Server. You can read more about Sendwithus here.

The Mailbox module is a communication tool and content management for internal messaging between the authenticated users.

Features:
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Authenticated users can compose the mass of messages to each other.
They can maintain the history of send/received messages.
Users can also save the messages in draft folder.
Users can reply on received messages.
Users can archive the old messages messages.

Creates a report of the mail domains used by the users on the site.

ActiveTrail, is a multichannel email marketing platform provider (SaaS).

ActiveTrail provides an advanced multichannel platform for authorized email marketing, landing pages, surveys, lead management and more, all built on a multilingual and user-friendly web-based system.

**IMPORTANT: This module is still in an early stage and does not allow any customization, more to come!**

This it's a very simple and lightweight module that allows you to (manually) send a notification about a node, the text is (hem, will be) customizable and the email addresses are stored in a taxonomy to allow the autocompletion.
Once a notification has been sent it will be stored in an entity and displayed in a view attached to the node.

GovDelivery subscribe module provides a field for GovDelivery subscription signups. Useful for sites that make heavy use of fieldable_panels_panes.

Install composer_manager and list_predefined_options modules and optionally the
queue_ui module.

Use Drush or other method to set the following variables for connection to
GovDelivery.

This module send register in entityform to email.