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Z-Push

ActiveSync server for syncing mail, contacts, calendars

File Sync & Storage ★ 152 stars Hard setup AGPL-3.0

Z-Push is an open-source implementation of the ActiveSync protocol that lets mobile devices sync mail, contacts, calendars, and tasks from groupware backends. It is widely used to add push sync to self-hosted mail systems.

Official siteSource code

Key features

  • ActiveSync protocol
  • Mail and PIM sync
  • Push notifications
  • Multiple backends

Strengths

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in PHP
  • Tiny footprint — runs in 256 MB RAM

Z-Push replaces

Self-hosted Exchange ActiveSync alternatives

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10 head-to-head comparisons.

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