Smtp
Showing 36 of 65 projects
High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
A full-featured email creation and transfer library for PHP, offering a robust alternative to the native mail() function.
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.
A Node.js module for sending emails with support for various transports, security features, and easy integration.
A fully featured open source mail delivery platform for incoming and outgoing email, designed for websites and web servers.
A fully featured open source mail delivery platform for incoming and outgoing email, designed as a self-hosted alternative to SendGrid and Mailgun.
Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
A Rust tool to verify email address deliverability without sending emails, with CLI, HTTP backend, and library options.
Insular email distribution - mail server as Docker images
A cross-platform .NET library for robust, RFC-compliant IMAP, POP3, and SMTP client communication.
A development SMTP server that catches and displays emails in a web interface for testing.
A composable, all-in-one mail server that implements SMTP, IMAP, DKIM, SPF, DMARC, and more in a single daemon.
A modern, full-featured, secure mail server designed for low-maintenance self-hosted email.
A fast, highly extensible, and event driven SMTP server
A Ruby library for email generation, parsing, and sending with a simple, idiomatic API.
A desktop SMTP server and email viewer for safe email testing during development.
A desktop SMTP server and email viewer for safe email testing during development.
All in one email sender for .NET. Supports popular senders (SendGrid, MailGun, etc) and Razor templates.
A Go package for generating clean, responsive HTML and plain-text transactional emails with built-in themes.
A robust and flexible Go library for creating and sending emails with support for attachments, HTML content, and connection pooling.
A Python library for sending emails conveniently via Gmail/SMTP with minimal code.
A Rust library for sending emails with multiple transport methods, SMTP security, and async support.
Deploy honeytokens across your network to detect unauthorized access and data exfiltration attempts.
A testable, composable, and adapter-based Elixir email library for developers.
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
A flexible PHP component for sending emails with support for multiple transports and Twig template integration.
A Go library for email verification without sending emails, featuring syntax validation, SMTP checks, disposable email detection, and domain typo suggestions.
A comprehensive Elixir library for composing, delivering, and testing emails with support for multiple adapters.
A comprehensive and idiomatic Go library for sending emails with SMTP, attachments, templates, and extensive security features.
A lightweight Java mailing library with a simple API for sending complex emails, built on Jakarta Mail.
Dovecot mail server
A Ruby gem for sending email with a simple, expressive API using a single command.
A lightweight, high-performance SMTP server implementation in C# with ESMTP extension support.
DavMail POP/IMAP/SMTP/Caldav/Carddav/LDAP Exchange and Office 365 Gateway - Synced with main subversion repository at
A Go package for sending emails via SMTP with support for keep-alive connections, TLS/SSL, and bulk sending.
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