PHPackages horde/smtp - 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/smtp ActiveLibrary[Mail & Notifications](/categories/mail) horde/smtp ========== SMTP and LMTP client library v2.0.0(1w ago)3908↑176.5%74LGPL-2.1-onlyPHPPHP ^8.1CI failing Since Oct 19Pushed 4d ago5 watchersCompare [ Source](https://github.com/horde/Smtp)[ Packagist](https://packagist.org/packages/horde/smtp)[ Docs](https://www.horde.org)[ RSS](/packages/horde-smtp/feed)WikiDiscussions FRAMEWORK\_6\_0 Synced today READMEChangelog (2)Dependencies (20)Versions (26)Used By (4) ### README not available The README for this package hasn't been synced yet. View it on [GitHub](https://github.com/horde/Smtp). ### Health Score 62 — FairBetter than 99% of packages Maintenance99 Actively maintained with recent releases Popularity25 Limited adoption so far Community31 Small or concentrated contributor base Maturity82 Battle-tested with a long release history 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 ~221 days Recently: every ~487 days Total 22 Last Release 7d ago Major Versions 1.9.5 → 2.0.0alpha12021-02-24 PHP version history (7 changes)1.2.5PHP >=5.3.0 1.5.0PHP >=5.3.0,<=6.0.0alpha1 1.9.2PHP >=5.3.0,<=8.0.0alpha1 1.9.5PHP ^5.3 || ^7 2.0.0alpha1PHP ^7 v2.0.0alpha3PHP ^7.4 || ^8 v2.0.0beta1PHP ^8.1 ### 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 (108 commits)")[![yunosh](https://avatars.githubusercontent.com/u/379318?v=4)](https://github.com/yunosh "yunosh (89 commits)")[![ralflang](https://avatars.githubusercontent.com/u/646976?v=4)](https://github.com/ralflang "ralflang (23 commits)")[![mrubinsk](https://avatars.githubusercontent.com/u/66822?v=4)](https://github.com/mrubinsk "mrubinsk (19 commits)")[![renan](https://avatars.githubusercontent.com/u/28046?v=4)](https://github.com/renan "renan (2 commits)")[![Schlue](https://avatars.githubusercontent.com/u/10165635?v=4)](https://github.com/Schlue "Schlue (1 commits)")[![kesselb](https://avatars.githubusercontent.com/u/3902676?v=4)](https://github.com/kesselb "kesselb (1 commits)")[![thomasjfox](https://avatars.githubusercontent.com/u/1146758?v=4)](https://github.com/thomasjfox "thomasjfox (1 commits)")[![nhirokinet](https://avatars.githubusercontent.com/u/5049333?v=4)](https://github.com/nhirokinet "nhirokinet (1 commits)") --- Tags clientmailRFC5321rfc2033 ### Embed Badge ![Health badge](/badges/horde-smtp/health.svg) ``` [![Health](https://phpackages.com/badges/horde-smtp/health.svg)](https://phpackages.com/packages/horde-smtp) ``` ### Alternatives [horde/imap_client IMAP client library 275.5k22](/packages/horde-imap-client)[horde/horde Horde base application 583.0k71](/packages/horde-horde)[horde/kronolith Calendar and scheduling application 101.5k5](/packages/horde-kronolith)[horde/imp Webmail application 261.3k](/packages/horde-imp) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)