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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 release notes are almost entirely upstream security currency.
mailcow ships named seasonal releases with lettered revisions, and nearly every revision exists to pull in an upstream security fix - Redis, ClamAV, SOGo, Rspamd, nginx, unbound, Postfix. Revision B of the Mooly 2026 release updates Redis 7.4.10, ClamAV 1.4.6, and SOGo 5.12.10, adds minor web UI and nginx hardening, and removes a legacy DeltaChat sieve rule. The last release with genuinely new features was the March cut, which added forced 2FA, ACME DNS-01 challenges, and a passwordless autodiscover endpoint.
What is Wire?
Wire keeps a fortnightly production train, but most tags ship without published notes.
Wire's web app cuts a production release every one to two weeks, tagged by date. Half the tags in this window carry no notes at all beyond the release name; the ones that do describe call-quality work — audio processing with automatic gain, echo cancellation and noise suppression on by default, background-effects performance under load — plus WebSocket recovery for more reliable message delivery. The file side is growing too: Shared Drives gained filter and sort, and Collabora documents can be created straight from the Files tab.
mailcow vs Wire: editorial side-by-side
mailcow
5.0COMMS
mailcow's release notes are almost entirely upstream security currency.
◆ Current state
mailcow ships named seasonal releases with lettered revisions, and nearly every revision exists to pull in an upstream security fix - Redis, ClamAV, SOGo, Rspamd, nginx, unbound, Postfix. Revision B of the Mooly 2026 release updates Redis 7.4.10, ClamAV 1.4.6, and SOGo 5.12.10, adds minor web UI and nginx hardening, and removes a legacy DeltaChat sieve rule. The last release with genuinely new features was the March cut, which added forced 2FA, ACME DNS-01 challenges, and a passwordless autodiscover endpoint.
◆ Where it's heading
For a self-hosted mail stack that bundles a dozen upstream components, keeping current with their CVEs is the product, and mailcow has organized its release cadence around exactly that. The pattern is consistent: a named release with some feature content every few months, then lettered revisions that are pure security currency plus small web UI escaping and validation fixes. The web interface is where mailcow's own code gets hardened - HTML escaping in quarantine views and sieve editors recurs across several revisions.
◆ Prediction
Expect the next entry to be another lettered revision carrying upstream updates, with the next named release likely bundling whatever feature work has accumulated since March.
Wire
5.0COMMS
Wire keeps a fortnightly production train, but most tags ship without published notes.
◆ Current state
Wire's web app cuts a production release every one to two weeks, tagged by date. Half the tags in this window carry no notes at all beyond the release name; the ones that do describe call-quality work — audio processing with automatic gain, echo cancellation and noise suppression on by default, background-effects performance under load — plus WebSocket recovery for more reliable message delivery. The file side is growing too: Shared Drives gained filter and sort, and Collabora documents can be created straight from the Files tab.
◆ Where it's heading
Wire is broadening from an encrypted messenger into a self-contained collaboration suite for buyers who cannot use the mainstream ones: calls, files, and now co-edited documents inside the same MLS-backed environment. The recurring themes are the unglamorous ones those buyers audit — end-to-end identity certificates surfaced in the device list, accessibility for passphrase entry and self-deleting messages, OpenSSL vulnerability handling. Feature work is steady but modest; reliability and compliance surface get the attention.
◆ Prediction
Expect the Files and Collabora surface to keep accreting the management features Drive just got, since that is the part of the suite furthest from parity with what it replaces.
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.
Proton Bridge
Proton Bridge spends its first release in ten weeks on crashes, memory bounds and dead code
Stalwart
Stalwart is chasing mail RFCs and its own storage layer at the same time
Mux
Every manual control Mux ships now arrives with a Robots workflow that does it for you
Netcore Cloud
Netcore's feed remains a demand-generation channel; ten entries, zero product releases.
Openfire
Openfire keeps its XMPP server current without changing what it is.
See all mailcow alternatives → · See all Wire alternatives →
Recent activity from mailcow and Wire
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision B
- 15d agoWireFilter and sort in Shared Drives; call effects fixes
- 20d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision A
- 1mo agoWireProduction release with no published notes
- 1mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3
- 1mo agoWireProduction release with no published notes
- 1mo agoWireCall audio processing and WebSocket recovery on by default
- 2mo agoWireProduction release with no published notes
- 2mo agoWireProduction release with no published notes
- 2mo agomailcowThird May revision: unbound CVE and nginx 1.30.2
- 3mo agomailcowSecond May revision: quarantine table HTML escaping
- 3mo agomailcowSOGo 5.12.8 covering four upstream security issues
Frequently asked questions
What is the difference between mailcow and Wire?
They serve adjacent needs but don't currently overlap on shipped themes. mailcow and Wire are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). 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 and Wire are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). 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.