Postmark
Postmark adds its own SOC 2 Type 2 report to a run of security work.
Comparison · Comms
mailcow vs Wire
A side-by-side editorial comparison of mailcow and Wire — release velocity, themes, recent moves, and the top alternatives to consider.
mailcow vs Wire: at a glance
What is mailcow?
mailcow's November release patches an admin RCE and reworks sync jobs.
mailcow ships named monthly releases with lettered revisions, mostly to pull in upstream security fixes for SOGo, Nginx, Redis, Unbound and Rspamd. The November release goes further: it fixes a remote code execution flaw reachable by admins and domain admins, adds mailbox groups, and reworks imapsync so sync jobs reference a separate source. It also caps request bodies at 64 MB, which breaks large SOGo and ActiveSync mail unless NGINX_MAX_BODY_SIZE is raised.
What is Wire?
Wire's web app is quietly moving conversations from Proteus to MLS encryption.
Wire's web client ships production tags every one to three weeks. The September release adds meeting reminders, better search for apps and people, and locale-aware dates, but its most consequential lines are about migrating conversations from the Proteus protocol to MLS: unread messages are preserved, read receipts are handled correctly afterwards, and MLS key-package recovery is more reliable. The October tag that followed is bare, with no notes.
mailcow vs Wire: editorial side-by-side
mailcow
5.0COMMS
mailcow's November release patches an admin RCE and reworks sync jobs.
◆ Current state
mailcow ships named monthly releases with lettered revisions, mostly to pull in upstream security fixes for SOGo, Nginx, Redis, Unbound and Rspamd. The November release goes further: it fixes a remote code execution flaw reachable by admins and domain admins, adds mailbox groups, and reworks imapsync so sync jobs reference a separate source. It also caps request bodies at 64 MB, which breaks large SOGo and ActiveSync mail unless NGINX_MAX_BODY_SIZE is raised.
◆ Where it's heading
The monthly security cadence holds, but recent releases carry more of mailcow's own features and API changes alongside the upstream bumps. Breaking changes now come with explicit migration steps, which suggests the API is being cleaned up for integrators.
◆ Prediction
Expect the promised RCE advisory details next week and a lettered revision within weeks to address fallout from the sync job API and body-size changes.
Wire
2.5COMMS
Wire's web app is quietly moving conversations from Proteus to MLS encryption.
◆ Current state
Wire's web client ships production tags every one to three weeks. The September release adds meeting reminders, better search for apps and people, and locale-aware dates, but its most consequential lines are about migrating conversations from the Proteus protocol to MLS: unread messages are preserved, read receipts are handled correctly afterwards, and MLS key-package recovery is more reliable. The October tag that followed is bare, with no notes.
◆ Where it's heading
The earlier window was about calling, with background effects and audio processing hardened over the summer. September's notes put the encryption protocol move front and centre, and the specific fixes suggest live conversations are already being migrated. Bare production tags still appear between documented releases, so roughly half the cadence is undocumented.
◆ Prediction
Expect more MLS migration fixes in the next documented release, since this one reads like the first wave of reported edge cases. Whether calling work resumes alongside is unclear from these entries.
Alternatives to mailcow and Wire
Other Comms products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either mailcow or Wire.
Element X Android
Element X Android turns on multi-select forwarding and better search in v26.11.0.
Fonoster
Fonoster lets voice agents pick Anthropic, Google or Groq models and record calls with one switch.
Salesmsg
Salesmsg's Sherpa AI now sends replies and builds broadcasts on request, with approval first.
Proton Bridge
Proton Bridge v3.27.2 adds support for the oo7 keyring on Linux.
Netcore Cloud
Netcore keeps publishing unified-platform explainers with no product release.
See all mailcow alternatives → · See all Wire alternatives →
Recent activity from mailcow and Wire
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agomailcowMoovember 2026: admin RCE fix, mailbox groups, imapsync rework
- 19d agomailcow🎃🐮 Mooctober 2026 | Security Update: PHP 8.2.35, SOGo 5.12.12 & Nginx 1.30.6
- 28d agoWireProduction tag with no release notes
- 1mo agomailcow2026-09a: Rspamd 4.2.1 and postfix-tlspol bumps
- 1mo agoWireMeeting reminders; Proteus-to-MLS migration fixes
- 1mo agomailcow🍂🐮 Mootember 2026 | Unbound 1.26.1, SOGo 5.12.11 & Redis 7.4.11
- 2mo agoWireBackground effects in calls; Proteus session reset recovery
- 2mo agoWireProduction tag with no upstream release
- 2mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision B
- 3mo agoWireFilter and sort in Shared Drives; call effects fixes
- 3mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision A
- 3mo agoWireCall quality and app lock configuration improvements
Frequently asked questions
What is the difference between mailcow and Wire?
They serve adjacent needs but don't currently overlap on shipped themes. mailcow is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is mailcow better than Wire?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. mailcow is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.
What are the best alternatives to mailcow?
Top mailcow alternatives in Comms are ranked by recent ship velocity. Browse the "mailcow alternatives" section above for the current picks, or visit /alternatives/mailcow for the full list with editorial commentary on each.
What are the best alternatives to Wire?
Top Wire alternatives in Comms are ranked by recent ship velocity. Browse the "Wire alternatives" section above for the current picks, or visit /alternatives/wire for the full list with editorial commentary on each.