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Comparison · Comms

mailcow vs RSS.com

A side-by-side editorial comparison of mailcow and RSS.com — release velocity, themes, recent moves, and the top alternatives to consider.

mailcow vs RSS.com: at a glance

FeaturemailcowRSS.com
SectorCommsComms
Velocity score5.00.0
Sparks · 30d00
Top themesmail-server, self-hosted, security-updates, dockerpodcast-hosting, public-api, podcasting-2.0, analytics
Last editorial update1d ago24d ago
WebsiteVisit →Visit →

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.

Read the full mailcow trajectory →

What is RSS.com?

RSS.com opened a public API, then its changelog went quiet

RSS.com is a podcast hosting platform that spent late 2025 shipping ecosystem features — a public API, Podcasting 2.0 Location Tags, and a year of analytics lookback. Its changelog has not updated since December 2025, so more recent direction is unclear.

Read the full RSS.com trajectory →

mailcow vs RSS.com: editorial side-by-side

M
mailcow
COMMS
5.0

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.

R
RSS.com
COMMS
0.0

RSS.com opened a public API, then its changelog went quiet

◆ Current state

RSS.com is a podcast hosting platform that spent late 2025 shipping ecosystem features — a public API, Podcasting 2.0 Location Tags, and a year of analytics lookback. Its changelog has not updated since December 2025, so more recent direction is unclear.

◆ Where it's heading

The late-2025 arc pointed toward opening the platform up: an API for third-party automation and standards-based metadata. Whether that momentum continued isn't visible, as the feed has been silent for months.

◆ Prediction

Insufficient recent data to predict confidently; the last visible direction was building API-driven integrations, but the months-long changelog gap makes any near-term call speculative.

Alternatives to mailcow and RSS.com

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 RSS.com.

See all mailcow alternatives → · See all RSS.com alternatives →

Recent activity from mailcow and RSS.com

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision B
  2. 20d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision A
  3. 1mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3
  4. 2mo agomailcowThird May revision: unbound CVE and nginx 1.30.2
  5. 3mo agomailcowSecond May revision: quarantine table HTML escaping
  6. 3mo agomailcowSOGo 5.12.8 covering four upstream security issues
  7. 8mo agoRSS.comv25.12.1
  8. 8mo agoRSS.comv25.11.1
  9. 10mo agoRSS.comv25.10.1

Frequently asked questions

What is the difference between mailcow and RSS.com?

They serve adjacent needs but don't currently overlap on shipped themes. mailcow is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 RSS.com?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. mailcow is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 RSS.com?

Top RSS.com alternatives in Comms are ranked by recent ship velocity. Browse the "RSS.com alternatives" section above for the current picks, or visit /alternatives/rss-com for the full list with editorial commentary on each.