Astrochimp is a mountable rails engine that you can install as a gem to create a splash page that collects email addresses and integrates with MailChimp to make sending launch notifications and teaser emails easy.

Using paperclip to generate images from sensible attributes like e-mails and telephone numbers, in order to reduce crawler's success

SendGrid v3 Mail Send API Ruby Client that validates API request body using JSON Schema.

Mail.Ru simple network protocol

Hominid is a Ruby gem that provides a wrapper for interacting with the Mailchimp email marketing service API.

Plugin for sending asynchronous email with Backburner

Add a BCC to all emails sent with action mailer via an interceptor

When mails or messages are sent from your application, Better Opener lets you preview the rendered messages in your browser instead of delivering them.

Preview mailer templates in the browser.

DEV.ME API Documentation [Currency Conversion and Exchange Rates API](https://dev.me/products/currency) - [IP2Location, IP Country, IP Information API](https://dev.me/products/ip) - [Email Validation, Mailbox Verification](https://dev.me/products/email) - [Phone Number Validation](https://dev.me...

This Ruby library is for determining the bounce type of an email message. It finds out if bounce is hard or soft or it is out of office mail.

BriefMail sends you and your team mates a deployment summary after deploying with capistrano.

Sync user emails with Campaign Monitor mailing lists

Cubaru is the easiest way to print and mail. See https://www.cubaru.com for details

Send emails at a specific time, in sequence

Validate e-mail addreses against RFC 2822 and RFC 3696.

Observer pattern for instant mail

Change the behavior of ActionMailer::Base in Rails to allways use delayed_job's send_later method.

A plugin for Capistrano to send an e-mail to notify people about deployments.

catches emails generated in the developer environment and sends them to the ENV['DEVELOPER_EMAIL'] address instead