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

Forms on any website

Postfix filter/hook to automatically encrypt outgoing emails with PGP/GPG

An open source email campaign management tool for nonprofits

💌 A menubar/taskbar Gmail App for Windows and macOS

SpamgourmetReloaded is a remake of the original spamgourmet.com service - made in Kotlin. The project includes a mailserver and a webinterface.

The official PHP library for Postmark.

A Docker container which runs the mbsync tool automatically to synchronize your email

A free simple responsive HTML email template

Email automation driven by headless chrome.

PHP Email address validator

Object-oriented, fully tested PHP IMAP library

A terminal based mail user agent based on notmuch

Horusec Platform is a set of web services that integrate with the Horusec CLI to facilitate the visualization and management of found vulnerabilities.

📨 Email template generator. Making emails fun again.

Send emails from ioBroker

An SMTP adapter for Bamboo.

S/MIME encoder in pure python

Converts email files (eml, msg) to pdf

Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.

Runbox 7 web app

✉️ A netlify lambda function that emails you tweets from a twitter list.

Simple email parsing for Golang

An add-on to support woocommerce custom emails

Modular Notifications (InApp, Email, SMS, CustomBackend etc) for Django

Simple Class for Validating Email Address Syntax in Pascal/Delphi

Spring Boot 2.x code examples

MFCMAPI

Mosaico - Responsive Email Template Editor

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

CSS styled emails without the hassle.

Copper mail : comprehensive email solution which can be readily deployed without complex configurations.

Comprehensive mailing tools for PHP

Egnature is an email signature generator tool, which is an open source and free to use.

MailMergeLib is a mail message client library which provides comfortable mail merge capabilities for text, inline images and attachments, as well as good throughput and fault tolerance for sending mail messages.

SparkPost client library for Node.js

CSS Inliner support for Twig

A bot that posts messages to rooms when an email is received.

.NET email library and proxy supporting IMAP, POP3, and SMTP with S/MIME and PGP.

Companion add-on for Firefox Relay. Keep your email safe from hackers and trackers. Make an email alias with one click, and keep your address to yourself.

Serverless email forwarding using AWS Lambda and SES

.NET API services - Managed Push Notifications, Email Engine (Templates, loading, & sending), & Localization Abstractions

[DEPRECATED] - Official Node.js client library for the Context.IO Email API

Terminal-based Mail User Agent

Best Bombing Tool with WhatsApp, Instagram, SMS bomber

Contoso University demo using asp net core and related technologies

Very crude and poorly written HTTP(s) and SMTP bin

⚡️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.

📧 Service to assist with sending emails from Vapor apps

Send Affordable Bulk Email Campaign Through WordPress

Mail sending module for Mezzio and Laminas MVC with support for file attachment and template email composition

Full-featured, open source mail server solution for mainstream Linux/BSD distributions.

A REST API for checking if an e-mail address is disposable (a.k.a. throwaway). https://isemaildisposable.webgazer.io

Official Node.js library for the Postmark API

🚀 Create hundreds of free ProtonMail Email Accounts in the matter of minutes 🚀

RiiConnect24 Mail Scripts. OSS.

Email-based instant messaging for Android.

A fully tested email parser for PHP 7.2+ (mailparse extension wrapper).

The Mailer component helps sending emails

Template generator for (responsive) emails & email signatures ✨

A few simple, but solid patterns for responsive HTML email templates and newsletters. Even in Outlook and Gmail.