Chanty
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Comparison · Comms
mailcow vs The Lounge
A side-by-side editorial comparison of mailcow and The Lounge — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
mailcow vs The Lounge: 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 The Lounge?
The Lounge ships steadily but publishes release notes that say nothing.
The Lounge is moving through a normal maintenance cadence — a 4.5.0 that took three release candidates, two 4.5.1 pre-releases, a 4.5.2 to repair Docker and Linux packaging, and now a 4.6.0 pre-release. What none of these entries contain is content. Every announcement is the project's standard pre-release boilerplate pointing at a commit list, so the changelog documents that work happened without saying what it was.
mailcow vs The Lounge: 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.
The Lounge
5.0COMMS
The Lounge ships steadily but publishes release notes that say nothing.
◆ Current state
The Lounge is moving through a normal maintenance cadence — a 4.5.0 that took three release candidates, two 4.5.1 pre-releases, a 4.5.2 to repair Docker and Linux packaging, and now a 4.6.0 pre-release. What none of these entries contain is content. Every announcement is the project's standard pre-release boilerplate pointing at a commit list, so the changelog documents that work happened without saying what it was.
◆ Where it's heading
The release mechanics are disciplined: pre-release, then release candidate, then stable, with feature freeze at the RC boundary. The communication is not. Readers tracking this project from the feed alone learn only version numbers and stability stage, and have to read commits to find out whether a release matters to them. Nothing in this window suggests a change of direction for the web IRC client itself.
◆ Prediction
On the established pattern, 4.6.0 should move to a release candidate and then stable, with feature work frozen once the first RC lands; whether 4.6.0 carries anything user-facing is not determinable from these notes.
Alternatives to mailcow and The Lounge
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 The Lounge.
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 The Lounge alternatives →
Recent activity from mailcow and The Lounge
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
- 20d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision A
- 27d agoThe Loungev4.6.0-pre.1
- 1mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3
- 1mo agoThe Loungev4.5.2 repairs broken Docker image and Linux package builds
- 2mo agoThe Loungev4.5.1-rc.1
- 2mo agoThe Loungev4.5.1-pre.1
- 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
- 3mo agoThe Loungev4.5.0-rc.3
- 4mo agoThe Loungev4.5.0-rc.2
Frequently asked questions
What is the difference between mailcow and The Lounge?
Both compete on the same themes — self-hosted — within Comms. mailcow and The Lounge 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 The Lounge?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. mailcow and The Lounge 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 The Lounge?
Top The Lounge alternatives in Comms are ranked by recent ship velocity. Browse the "The Lounge alternatives" section above for the current picks, or visit /alternatives/the-lounge for the full list with editorial commentary on each.