BlockHead provides an interceptor that can be used to restrict emails sent from a Rails application to a specific set of domains. Just set two environment variables -- the whitelisted domains and a bucket to collect redirected emails.

An event-machine based riak client with some extra relationship support.

Ruby Blog Post (hatena,athera,269g,cocolog,fc2,goo,jugem,livedoor,maruta,seesaa,webry,wordpress,gmail,sendmail,sonet)

Separates new messages from included reply chains in the body of emails

A simple bot framework for individuals.

Send transactional email with Brevo

A gem to monitor TLS certificates using Cert Stream.

Capcode plugin to send mail

This gem provides some notifiers to send notifications after a deploy with Capistrano.

Shared TYPO3 integration tests.

Description - Postfix SMTP Filter to parse DTE files to CarterDTE Platform

Gem packaging of Catarse, a crowdfunding application.

Provides mail functionality for the Cells gem

A small, fast, evented, actor-based, highly customizable Ruby SMTP server.

Ruby gem for sending emails through http://postmarkapp.com HTTP API. It relieas on the mail gem for message construction.

Send ChatWork notifications via email, stdout and so on

Sends chef-client errors via email. More detailed than a simple chef_handler.

Why do you keep typing all that crap into your Capistrano recipes? Are you too cool for standards? Well, ARE YA!?

Use this gem to send emails through SES via Mailchimp api.

Various email importers for chronicle-etl