A free & open modern, fast email client with user-friendly encryption and privacy features

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• Updated Nov 1, 2023
• Python

Recommend new arxiv papers of your interest daily according to your Zotero libarary.

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• Updated Nov 1, 2026
• Python

Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)

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• Updated Nov 12, 2026
• PHP

Email helpdesk built using Ruby on Rails and Zurb Foundation

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• Updated Dec 22, 2018
• Ruby

An Open Source Lightweight E-Mail Client

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• Updated Nov 3, 2026
• Go

Chatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧

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• Updated Nov 12, 2026
• Rust

Library to send e-mails over different transports and protocols (like SMTP and IMAP) using immutable messages and streams. Also includes SMTP server.

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• Updated Nov 2, 2026
• PHP

Lightweight Standalone DMARC and SMTP TLS Report Viewer with IMAP Client

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• Updated Nov 8, 2026
• Rust

mnm implements TMTP protocol. Let Internet sites message members directly, instead of unreliable, insecure email. Contributors welcome! (Server)

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• Updated Jan 15, 2023
• Go

📨 An open-source email client built around your privacy, cross-platform with zero telemetry, fully yours.

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• Updated Nov 9, 2026
• Go

Collection of resources related to phishing

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• Updated Jun 12, 2021

A small collection of bookmarklets that are useful for OSINT, including ones for e-mail addresses, Facebook, extracting links and WhatsMyName.app.

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• Updated Apr 24, 2026
• JavaScript

Mail4Delphi uses the Indy component to send the email.

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• Updated Jan 19, 2024
• Pascal

A open source tool for collating publically available contact information for businesses.

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• Updated Feb 4, 2023
• JavaScript

Filter gmail with AI

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• Updated Feb 13, 2024
• JavaScript

E-mail builder library for Rust

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• Updated Nov 2, 2026
• Rust

A java command line tool to convert Outlook OST/PST files to MBOX or EML.

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• Updated Mar 25, 2026
• Java

Use grepaddr to extract (grep) all kinds of addresses from stdin like URLs (incl. IPv4/IPv6), IP addresses & ranges (IPv4/IPv6), e-mail addresses, MAC addresses.

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• Updated Aug 7, 2023
• Python

mnm implements TMTP protocol. Let Internet sites message members directly, instead of unreliable, insecure email. Contributors welcome! (Client)

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• Updated Aug 24, 2026
• Go

Elyzer is an email header analyzer, written in python, capable of detecting potential spoofing attempts.

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• Updated Jun 27, 2026
• Python