DelayedMailhopper extends Mailhopper to deliver emails asynchronously with DelayedJob.

Mailbag keeps track of the emails that your application sends out by logging them to a database table

A webhookr extension to support Mailchimp webhooks.

This gem add google analytics campaign tags to every link in your action mailer

Is an Action Mailer adapter for using SendGrid in a Rails application

This provides Ruby access to (eventually) all of Mailchimp's APIs

With this gem you will be able to enqueue your emails on your Resque workers to avoid making your user wait for the email to be send when he causes an email sending action in your application. Using resque_action_mailer_backend makes email sending a breeze as you w...

Harvested wraps the Harvest API concisely without the use of Rails dependencies. More information about the Harvest API can be found on their website (http://www.getharvest.com/api). For support hit up the Mailing List (http://groups.google.com/group/harvested)

Send emails using the Mailgun API from your Capistrano recipes. Simple configuration using Capistrano variables along with direct access to the API.

Manage your ActionMailer mail templates from ActiveAdmin, and log them.

The secret mail address is mapped to a sender address and a forwarding address or action

Implementation of Google's ReCAPTCHA Mailhide API

Action Mailer configuration helper

This is a simple mailing list system.

Using the contactology gem, this library provides a Contactology::Mailer to provide simple integration with sending Contactology transactional campaigns.

Easy Mailchimp Ruby library

Feed2Mail is a feed to mail gateway. Feeds can be listed in a config file, and new feed items will be reported by mail.

Mailer interface

Uses the maildir gem to store ActionMailer deliveries.

Mail Parsing lib