tmpmail is a command line utility written in POSIX sh that allows you to create a temporary email address and receive emails to the temporary email address. It uses 1secmail's API to receive emails.
Free, Open-source Anonymous Email Forwarding
A set of Ansible playbooks to build and maintain your own private cloud: email, calendar, contacts, file sync, IRC bouncer, VPN, and more.
Support tables for HTML and CSS in emails.
Mautic is marketing automation software (email, social & more). Social Media Marketing, Contact Management, Email Marketing, Forms, Campaigns, Reports
Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers.
MailHog is an email testing tool for developers:
Configure your application to use MailHog for SMTP delivery
View messages in the web UI, or retrieve them with the JSON API
Optionally release messages to real SMTP servers for delivery
Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization. The box also includes automatic DNS configuration, spam filtering, greylisting, backups to Amazon S3, static website hosting, and free TLS (SSL) certificates from Let’s Encrypt. Your box can host mail for multiple users and multiple domain names.
It implements modern mail protocols (SPF, DKIM, and DMARC) and the latest security best practices, including opportunistic TLS, strong ciphers, and HSTS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection against active attacks. Exchange ActiveSync is also available as a beta feature.
I love newsletters, but I hate receiving e-mails. Call me an oldie, but I still use RSS feeds to read my news and e-mails for communication. And I prefer to keep those two separate.
Unfortunately, as newsletters have become popular, there are some great readings that are not available through RSS anymore. Kill the newsletter! exists to fill this gap.
This service converts newsletters into RSS feeds.
Tutanota is an open-source end-to-end encrypted email software and freemium hosted secure email service based on this software
Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, list segmentation, custom fields, email templates, large CSV list import files, etc.
MJML is a markup language designed to reduce the pain of coding a responsive email. Its semantic syntax makes it easy and straightforward and its rich standard components library speeds up your development time and lightens your email codebase. MJML's open-source engine generates high quality responsive HTML compliant with best practices.
Maily Herald is a Ruby on Rails engine that helps you send and manage your mailings.
Think of Maily as a self-hosted Mailchimp® you can easily integrate with your site.
Free online service that allows you to test your emails for Spam, Malformed Content and Mail Server Configuration problems
N1 is an open-source mail client built on the modern web with Electron, React, and Flux. It is designed to be extensible, so it's easy to create new experiences and workflows around email. N1 is built on the Nylas Sync Engine which is also open source free software.
Firefox addon to simplify the use of temporary e-mail addresses in order to protect your real address from spam.
mmmmail! is a completely ANONYMOUS and FREE disposable Email to RSS service.
This means you can choose any email address in the mmmmail.com domain and use it at your own will. All email sent to this email address of your choice can then be retrieved as an RSS feed.
A Responsive Email Framework from ZURB. Quickly create responsive HTML emails that work on any device & client. Even Outlook.
Catches mail and serves it through a dream.
MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface.
Email Blueprints is a collection of HTML email templates that can serve as a solid foundation and starting point for the design of emails.