PyPI97Exceptionalhealth index
Python★ 5,978↓ 14.7M/moAug 27, 2026
npm · Packagist95Exceptionalhealth index
JavaScript · PHP · Vue★ 1,005Jul 17, 2026
PyPI · crates.io94Exceptionalhealth index

chatmail/coreChatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧
Rust★ 915↓ 8,259/moAug 5, 2026
Maven91Excellenthealth index
Java★ 741Aug 28, 2026
npm89Excellenthealth index
JavaScript★ 2,106↓ 2,588/moAug 3, 2026
PyPI · npm88Excellenthealth index
Python★ 299Aug 1, 2026
Packagist88Excellenthealth index

cypht-org/cyphtCypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
PHP · JavaScript★ 1,712Sep 5, 2026
crates.io88Excellenthealth index

stalwartlabs/stalwartAll-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
Rust★ 14.4KAug 27, 2026
npm87Excellenthealth index
JavaScript · Pug★ 1,668Sep 6, 2026
Packagist87Excellenthealth index
jasonmunro/cyphtCypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
PHP · JavaScript★ 1,633Jul 17, 2026
Packagist87Excellenthealth index
jasonmunro/hm3Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
PHP · JavaScript★ 1,633Jul 17, 2026
npm84Excellenthealth index
n24q02m/better-email-mcpIMAP/SMTP email for AI agents -- read, send, organize folders, and manage attachments across multiple accounts, with auto-discovery.
TypeScript★ 26↓ 4,113/moJul 16, 2026
NuGet83Excellenthealth index
C#★ 6,842Aug 22, 2026
Packagist81Excellenthealth index
PHP★ 559↓ 43.8K/moJul 20, 2026
crates.io78Goodhealth index
Rust★ 50↓ 15.8K/moJul 20, 2026
TypeScript★ 1↓ 87.5K/moAug 22, 2026
crates.io78Goodhealth index
Rust★ 7,122↓ 2,821/moAug 28, 2026
Go · npm77Goodhealth index

dmarcguardhq/dmarcguard🛡️ A lightweight, self-hosted DMARC report parser with a beautiful Vue.js dashboard. Single-binary deployment with IMAP integration, SQLite storage, and RFC 7489 compliance. Built with Go and Vue 3 - no external dependencies required.
Go · Vue★ 187Aug 13, 2026
TypeScript★ 60↓ 2,797/moJul 21, 2026
higgscli/higgsAgent-first CLI for Proton Mail. Schema manifest, NDJSON, typed errors, stable exit codes.
Go★ 0Jul 17, 2026
JavaScript★ 34↓ 2,663/moAug 4, 2026
C#★ 95Jul 26, 2026
PyPI · npm65Goodhealth index

kapella-hub/FirekeepHQSelf-hosted shared context, memory, coordination, and evidence for Claude Code, Codex, Kiro, OpenCode, and MCP agents.
Python★ 2↓ 2,390/moAug 29, 2026
PyPI62Moderatehealth index
c0r0n3r/cryptolyzerCryptoLyzer is a fast, flexible and comprehensive server cryptographic protocol (TLS, SSL, SSH, DNSSEC) and related setting (HTTP headers, DNS records) analyzer and fingerprint (JA3, HASSH tag) generator with Python API and CLI. (read-only clone of the original GitLab project)
Python★ 47Jul 27, 2026
npm60Moderatehealth index
JavaScript · HTML★ 2↓ 3,902/moJul 20, 2026
Go · npm60Moderatehealth index
vul-os/lilmailA lightweight, database-free PIM client — mail, calendar, and contacts — in a single Go binary.
Go · HTML★ 39Jul 24, 2026
crates.io59Moderatehealth index
Rust★ 145Jul 21, 2026
Packagist56Moderatehealth index
PHP★ 38↓ 15.2K/moAug 10, 2026
Go★ 5Aug 1, 2026
yunfeizhu/mcp-mail-serverA lightweight Model Context Protocol (MCP) server that provides IMAP and SMTP email functionality for AI assistants like Claude in Cursor IDE. Built with TypeScript and optimized for easy deployment via npm/npx.
TypeScript★ 44↓ 3,276/moJul 31, 2026