PHPackages horde/mail - PHPackages - PHPackages [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register) 1. [Directory](/) 2. / 3. [Mail & Notifications](/categories/mail) 4. / 5. horde/mail ActiveLibrary[Mail & Notifications](/categories/mail) horde/mail ========== Mail library v3.0.0(1w ago)28.4k↑22.7%1220BSD-2-ClausePHPPHP ^7.4 || ^8 Since Jan 17Pushed 3d ago6 watchersCompare [ Source](https://github.com/horde/Mail)[ Packagist](https://packagist.org/packages/horde/mail)[ Docs](https://www.horde.org/libraries/Horde_Mail)[ RSS](/packages/horde-mail/feed)WikiDiscussions FRAMEWORK\_6\_0 Synced 2d ago READMEChangelog (6)Dependencies (32)Versions (38)Used By (20) Horde Mail ========== [](#horde-mail) Email address parsing (RFC 5322), mail transport, and mbox parsing (RFC 4155). Part of the [Horde](https://www.horde.org/) framework. Installation ------------ [](#installation) ``` composer require horde/mail ``` Upgrading --------- [](#upgrading) See [doc/UPGRADING.md](doc/UPGRADING.md) for API changes between releases and a full migration guide from the legacy `lib/` classes to the modern `src/` API. Collaborator libraries ---------------------- [](#collaborator-libraries) PackageRole[horde/stream](https://github.com/horde/Stream)Typed stream wrappers (`StreamInterface`, `Temp`) used by transports and mbox parser[horde/smtp](https://github.com/horde/Smtp)SMTP/LMTP protocol client used by `SmtpTransport` and `LmtpTransport` (optional)[horde/eventdispatcher](https://github.com/horde/EventDispatcher)PSR-14 event dispatcher for parser observability[horde/idna](https://github.com/horde/Idna)Internationalized domain name encoding[horde/mime](https://github.com/horde/Mime)MIME header encoding/decoding (legacy `lib/` dependency)[horde/socket\_client](https://github.com/horde/Socket_Client)TCP socket abstraction used by `horde/smtp` (optional)Relevant RFCs ------------- [](#relevant-rfcs) - [RFC 5322](https://datatracker.ietf.org/doc/html/rfc5322) — Internet Message Format (address syntax) - [RFC 6532](https://datatracker.ietf.org/doc/html/rfc6532) — Internationalized Email Headers (EAI) - [RFC 2047](https://datatracker.ietf.org/doc/html/rfc2047) — MIME Message Header Extensions (encoded words) - [RFC 4155](https://datatracker.ietf.org/doc/html/rfc4155) — The application/mbox Media Type - [RFC 5321](https://datatracker.ietf.org/doc/html/rfc5321) — Simple Mail Transfer Protocol License ------- [](#license) BSD-2-Clause. See [LICENSE](LICENSE). ### Health Score 63 — FairBetter than 99% of packages Maintenance99 Actively maintained with recent releases Popularity32 Limited adoption so far Community42 Growing community involvement Maturity75 Established project with proven stability Bus Factor2 2 contributors hold 50%+ of commits How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~168 days Recently: every ~21 days Total 28 Last Release 8d ago Major Versions 2.6.5 → 3.0.0alpha12021-02-24 2.6.6 → v3.0.0alpha42022-10-08 v2.7.2 → v3.0.0alpha62026-03-15 PHP version history (7 changes)2.1.3PHP >=5.3.0 2.3.0PHP >=5.3.0,<=6.0.0alpha1 2.6.3PHP >=5.3.0,<=8.0.0alpha1 2.6.4PHP ^5.3 || ^7 3.0.0alpha1PHP ^7 v2.7.0PHP ^7.4 || ^8.0 v3.0.0alpha4PHP ^7.4 || ^8 ### Community Maintainers ![](https://www.gravatar.com/avatar/c943a083635c28520599075eaea7ede2d743b7697b76e84d6bdc37e52cc8249b?d=identicon)[yunosh](/maintainers/yunosh) ![](https://www.gravatar.com/avatar/c931cd02664859360478593450d6c473a05bb12b209dfacfc534cd13257cc7ef?d=identicon)[ralflang](/maintainers/ralflang) ![](https://www.gravatar.com/avatar/e4f6c6771993db2ed500959b42353f6cf6a2ca0406d9617f7ae680f4504faa4a?d=identicon)[horde](/maintainers/horde) ![](https://www.gravatar.com/avatar/a7767adb66b45f2f05bcd44d49bc4e67efacd9ce05b161ce2d481d5dd6af025c?d=identicon)[mrubinsk](/maintainers/mrubinsk) ![](https://www.gravatar.com/avatar/816e2b926f25f8cd2939054c7a7173011b4303d690e25ab61bf33cf8c7cf71ae?d=identicon)[tdannhauer](/maintainers/tdannhauer) --- Top Contributors [![slusarz](https://avatars.githubusercontent.com/u/381003?v=4)](https://github.com/slusarz "slusarz (181 commits)")[![yunosh](https://avatars.githubusercontent.com/u/379318?v=4)](https://github.com/yunosh "yunosh (126 commits)")[![ralflang](https://avatars.githubusercontent.com/u/646976?v=4)](https://github.com/ralflang "ralflang (48 commits)")[![mrubinsk](https://avatars.githubusercontent.com/u/66822?v=4)](https://github.com/mrubinsk "mrubinsk (20 commits)")[![TDannhauer](https://avatars.githubusercontent.com/u/6716033?v=4)](https://github.com/TDannhauer "TDannhauer (5 commits)")[![renan](https://avatars.githubusercontent.com/u/28046?v=4)](https://github.com/renan "renan (3 commits)")[![thomasjfox](https://avatars.githubusercontent.com/u/1146758?v=4)](https://github.com/thomasjfox "thomasjfox (2 commits)")[![amulet1](https://avatars.githubusercontent.com/u/18431541?v=4)](https://github.com/amulet1 "amulet1 (2 commits)")[![Gomez](https://avatars.githubusercontent.com/u/48724?v=4)](https://github.com/Gomez "Gomez (1 commits)")[![bsod85](https://avatars.githubusercontent.com/u/9477994?v=4)](https://github.com/bsod85 "bsod85 (1 commits)")[![KarimGeiger](https://avatars.githubusercontent.com/u/2329930?v=4)](https://github.com/KarimGeiger "KarimGeiger (1 commits)")[![powercycle](https://avatars.githubusercontent.com/u/2614846?v=4)](https://github.com/powercycle "powercycle (1 commits)")[![ChristophWurst](https://avatars.githubusercontent.com/u/1374172?v=4)](https://github.com/ChristophWurst "ChristophWurst (1 commits)")[![ThorstenSuckow](https://avatars.githubusercontent.com/u/823135?v=4)](https://github.com/ThorstenSuckow "ThorstenSuckow (1 commits)") --- Tags smtp ### Embed Badge ![Health badge](/badges/horde-mail/health.svg) ``` [![Health](https://phpackages.com/badges/horde-mail/health.svg)](https://phpackages.com/packages/horde-mail) ``` ### Alternatives [horde/imap_client IMAP client library 275.5k20](/packages/horde-imap-client)[horde/imp Webmail application 261.3k](/packages/horde-imp)[horde/kronolith Calendar and scheduling application 101.5k5](/packages/horde-kronolith)[horde/horde Horde base application 583.0k71](/packages/horde-horde) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)