An email and SMTP testing tool with API for developers
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Jul 28, 2025 - Go
Simple Golang SMTP relay/proxy server
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Jul 24, 2025 - Go
The first Open-Source high-performance MTA developed from the ground-up for high-volume email sending environments.
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Jul 29, 2025 - Rust
The collaborative Open Source successor to qmail and netqmail
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Apr 18, 2025 - C
Lightweight SMTP relay Docker image using msmtpd
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Jun 20, 2025 - Dockerfile
Simple mail relay that can take unauthenticated SMTP emails (e.g. over port 25) and relay them to authenticated, TLS-enabled SMTP servers.
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May 26, 2025 - Go
SpamPD - Spam Proxy Daemon. A spam-filtering SMTP/LMTP proxy server using SpamAssassin in Perl. Since 2002.
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Feb 27, 2025 - Perl
Postfix Docker Image with great flexibility
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Jan 31, 2024 - Shell
SMTP Open Relay Exploitation
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Nov 23, 2020 - HTML
AWS-hosted personal email system: sending, receiving, storage, and forwarding (relaying). `notmuch` client. JMAP server WIP.
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Dec 9, 2024 - Rust
SMTP server to use for forwarding messages
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Jul 15, 2025 - Go
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Jul 21, 2025 - Go
Docker compose for running Uptime Kuma and sending notifications via NTFY and Email
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Jan 15, 2025
PHP SMTP Mailer library implemented by socket
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Jan 5, 2024 - PHP
GoLang SMTP server and client implementation
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Jun 11, 2025 - Go
Synchronous Concurrent Relay and Mailer Daemon
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Jan 15, 2023 - Go
Minimal SMTP server/relay, works natively on Kubernetes
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Apr 4, 2023 - Jinja
SMTP Relay service for Windows
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Jul 10, 2025 - C#