443 Open source projects that are alternatives of or similar to Sendgrid Java

Insular email distribution - mail server as Docker images

✉️ ✅ A Fast and Free Email Verification API written in Go

Questions and support for Mailcoach

UI Email Signature Generator - Make easy to create your email signature

A revolutionary internet infrastructure enabling a truly free Network, that offers Stability, Trust, Privacy, and Security

Django email confirmation for any model and any field

⚡️Arduino Mail Client Library to send, read and get incoming mail notification for ESP32, ESP8266 and SAMD21 devices. The library also supported other Arduino devices using Clients interfaces e.g. WiFiClient, EthernetClient, and GSMClient.

Faster MIME Mail Parser

Juice inlines CSS stylesheets into your HTML source.

Official Java client library for the Postmark HTTP API

An SMTP server that converts emails into Pushover notifications.

📥 An email client that functions like a kanban board.

📧 An Example of using an HTML form (e.g: "Contact Us" on a website) to send Email without a Backend Server (using a Google Script) perfect for static websites that need to collect data.

Simple tool for downloading email attachments for all emails in a given folder using an IMAP client

The email service for when just "hey.com" isn't enough.

Bootstrap 4 (and soon 5) stylesheet, compiler, and inliner for responsive and consistent emails with the Bootstrap syntax you know and love.

VMime Mail Library

Golang package for send email. Support keep alive connection, TLS and SSL. Easy for bulk SMTP.

A ruby gem to check if the owner of a given email address or website is working for THE MAN (a.k.a verifies government domains).

a mailer library for Rust

The best free email forwarding for custom domains (Web Server)

What did I do on February 14th 2007? Visualize your (digital) life in Org-mode

😎 Chrome extension to fetch the email ID of a user even if they haven't made it public on their GitHub profile

💌 An extensible desktop mail app built on the modern web. Forks welcome!

OSINT Project

Object-oriented, fully tested PHP IMAP library

Mail connectors for Camunda Platform 7

📪 可能是最小的 Java 邮件发送库了，支持抄送、附件、模板等功能。

Lightweight SMTP client written in Go

A Domain Name & Email Address Collection Tool

Open-source live customer chat

Terminal-based Mail User Agent

An automated e-mail OSINT tool

Dovecot mail server

Adds email sending capability to a Nuxt.js app. Adds a server route, an injected variable, and uses nodemailer to send emails.

Email-based instant messaging for Desktop.

📪 An interactive emailing management service with scheduling, templating, tracking and A/B testing.

A web interface for browsing Ruby on Rails sent emails

Group Office groupware and CRM

C# library that moves your stylesheets to inline style attributes, for maximum compatibility with E-mail clients.

SparkPost client library for PHP

Check if an email address exists without sending any email, written in Rust.

🔎 Node library for parsing plain text email content.

Asynchronous email client for your terminal

A list of amazing Newsletters

A graphical threads-with-tags style, lightweight and fast, e-mail client for Notmuch

Delta Chat Rust Core library, used by Android/iOS/desktop apps and bindings

Sieve Script Editor

A console-based mail-client with integrated Lua scripting support.

HEML is an open source markup language for building responsive email.

A list of common eMail providers.

Leaked? 2.1 - A Checking tool for Hash codes, Passwords and Emails leaked

Exchange Transport rules to detect and enable response to phishing

🦘 The Grouparoo Monorepo - open source customer data sync framework

📮 Nifty Gmail desktop app for macOS, Linux & Windows

Add a simple contact form to your Craft CMS site.

Angular V8 wrapper for linkifyjs - library for finding links in plain text and converting them to HTML <a> tags via linkifyjs

GitHub Action that triggers e-mails with release notes when these are created

Emil is a library for dealing with E-Mail in Scala.

Add Gulp to your MJML workflow!