# RainLoop/rainloop-webmail

Simple, modern & fast web-based email client

Repository: https://github.com/RainLoop/rainloop-webmail
Canonical: https://ross.abutalabs.com/products/rainloop-webmail
Homepage: http://rainloop.net
Language: PHP
License: MIT
License Family: permissive
Topics: webmail, rainloop, php, js, javascript, imap, smtp, mail
Archived: true
Last push: 2024-08-20T23:46:36+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4726, "days_push": 743, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4118, forks 1011 (observed 2026-08-28T04:08:35.912163+00:00)

## What it is
RainLoop Webmail is a simple, modern, and fast web-based email client written in PHP that connects directly to mail servers via IMAP and SMTP without storing mail locally. It requires no database, installs easily on any PHP-capable web server, and offers features like Sieve filters, OpenPGP, 2FA, and a plugin system.

## Use cases
- self-host a webmail client for my IMAP/SMTP mail server
- give users browser access to email without a database backend
- deploy a lightweight webmail interface on a low-end VPS
- access multiple email accounts from one web interface
- support Sieve filters and vacation messages in a webmail UI
- add OpenPGP encryption and 2FA to web-based email

## When to choose
- you need a database-free, low-resource webmail client for PHP hosting
- you want direct IMAP/SMTP access without mail stored on the web server
- you need Sieve, OpenPGP, or 2FA support in a self-hosted webmail
- you want simple installation and an admin panel for multi-domain setups

## When to avoid
- you need actively developed software with ongoing security fixes - the project is in legacy/maintenance mode
- you prefer a Node.js or modern-stack webmail client
- you need calendar or contact sync features beyond basic contacts storage
- your server cannot run PHP 5.4+ with the required extensions

## Facets
- artifact type: application
- maturity: maintenance
- function: email, http-server, auth, caching, plugin-system
- domain: email, self-hosted, web-development, privacy
- platform: php, self-hosted, cross-platform
- tags: webmail, imap, smtp, sieve, openpgp, two-factor-authentication, no-database, legacy, web-server, linux

## Member repositories
- RainLoop/rainloop-webmail (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:35.912163+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:23:08.012314+00:00, confidence not recorded.
  - readme: https://github.com/RainLoop/rainloop-webmail (fetched 2026-08-28T04:08:35.912163+00:00, sha 621450a4bf5f)
  - homepage: http://rainloop.net (fetched 2026-08-29T09:14:34.021302+00:00, sha 127ccef3e500)
  - site_page: https://www.rainloop.net/features (fetched 2026-08-29T09:14:34.023746+00:00, sha 9d358aee304a)
  - site_page: https://www.rainloop.net/docs (fetched 2026-08-29T09:14:34.025530+00:00, sha 908c9d7e5b1d)
  - site_page: https://www.rainloop.net/docs/system-requirements (fetched 2026-08-29T09:14:34.027160+00:00, sha 91d05ca1c6ea)
  - site_page: https://www.rainloop.net/docs/installation (fetched 2026-08-29T09:14:34.028781+00:00, sha af6470c5e00b)
  - site_page: https://www.rainloop.net/docs/upgrade (fetched 2026-08-29T09:14:34.030373+00:00, sha 13bba1facf47)
  - site_page: https://www.rainloop.net/docs/configuration (fetched 2026-08-29T09:14:34.033575+00:00, sha 188122b23b4a)
  - site_page: https://www.rainloop.net/changelog (fetched 2026-08-29T09:14:34.031871+00:00, sha 12dd5378c696)
- Data as of 2026-08-30T08:39:29.467469+00:00.