Maddy
A one-binary mail server learning to behave like production infrastructure.
Comparison · Comms
Subsplash vs mailcow
A side-by-side editorial comparison of Subsplash and mailcow — release velocity, themes, recent moves, and the top alternatives to consider.
Subsplash vs mailcow: at a glance
| Feature | Subsplash | mailcow |
|---|---|---|
| Sector | Comms | Comms |
| Velocity score | 6.3 | 5.0 |
| Sparks · 30d | 1 | 0 |
| Top themes | church-management, workflow-automation, natural-language-query, analytics | mail-server, self-hosted, cve-response, xss-hardening |
| Last editorial update | 1d ago | 1h ago |
| Website | — | Visit → |
What is Subsplash?
Subsplash is turning its church dashboard from a record of activity into something that acts.
Subsplash runs a broad church-operations platform — giving, people, events, groups, media and now workflows — and the last quarter has been about layering analysis and automation over that data. Trends AI landed in March as a chart-and-dashboard layer with AI analysis; People Assistant followed in May with natural-language filtering of the congregation; Workflows left beta in July with step-triggered email included for Subsplash One clients. Around those, the window is steady administrative work: group member limits, dashboard registration, an Events Manager role.
What is mailcow?
Six releases, and every one of them is a security update in some form.
mailcow ships on a monthly tag with lettered revisions, and this window contains no release that isn't security-driven. The May line ran to three revisions in two weeks — an unnamed fix with a CVE identifier withheld until later, SOGo 5.12.8 covering four upstream issues, an unbound CVE, HTML escaping added to the quarantine table, sieve filter editor and queue manager. July brought Rspamd 4.1.0 and later 4.1.4, nginx 1.30.3 and a CVE fix, Postfix moved off bookworm, and a release described only as hardening.
Subsplash vs mailcow: editorial side-by-side
Subsplash
6.3COMMS
Subsplash is turning its church dashboard from a record of activity into something that acts.
◆ Current state
Subsplash runs a broad church-operations platform — giving, people, events, groups, media and now workflows — and the last quarter has been about layering analysis and automation over that data. Trends AI landed in March as a chart-and-dashboard layer with AI analysis; People Assistant followed in May with natural-language filtering of the congregation; Workflows left beta in July with step-triggered email included for Subsplash One clients. Around those, the window is steady administrative work: group member limits, dashboard registration, an Events Manager role.
◆ Where it's heading
Two arcs are converging. One makes the data answerable without a spreadsheet or a filter builder; the other makes the platform take action on it, starting with email at a workflow step. Bundling Workflows into Subsplash One instead of pricing it separately says the automation is meant to be table stakes for the top tier and a reason to climb into it — and the AI features carry the same 'talk to your CSM' gate. The administrative releases are the tell that this is a platform serving operators, not enthusiasts.
◆ Prediction
Email is the only action a workflow step can currently take, and Subsplash already owns the church's app and its messaging surfaces — push or SMS from a workflow step is the near-term extension, alongside pointing People Assistant's plain-language filters at who enters a workflow in the first place.
mailcow
5.0COMMS
Six releases, and every one of them is a security update in some form.
◆ Current state
mailcow ships on a monthly tag with lettered revisions, and this window contains no release that isn't security-driven. The May line ran to three revisions in two weeks — an unnamed fix with a CVE identifier withheld until later, SOGo 5.12.8 covering four upstream issues, an unbound CVE, HTML escaping added to the quarantine table, sieve filter editor and queue manager. July brought Rspamd 4.1.0 and later 4.1.4, nginx 1.30.3 and a CVE fix, Postfix moved off bookworm, and a release described only as hardening.
◆ Where it's heading
Two distinct pressures are visible. One is upstream: mailcow bundles Postfix, Rspamd, SOGo, nginx, unbound and Dovecot, so every one of their advisories becomes a mailcow release, and the base image migration from bookworm to trixie is that same maintenance surfacing at the OS layer. The other is the project's own web UI, where output escaping is being retrofitted view by view — quarantine table, sieve editor, queue manager, quarantine overview — which reads as a systematic pass rather than isolated reports. Earlier releases in the feed show where feature work went when it happened: forced 2FA, ACME DNS-01 challenges, and admin controls over EAS and DAV access.
◆ Prediction
Expect the monthly-plus-revisions rhythm to continue with upstream component bumps driving most of it, and the web UI escaping pass to reach the remaining admin views.
Alternatives to Subsplash and mailcow
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 Subsplash or mailcow.
Friendica
Friendica keeps betting on being the fediverse node that speaks everyone else's protocols.
diaspora
The original federated social network now ships roughly once every two years.
Element iOS
Renamed Element Classic, this client now ships one small fix every few months
Twilio
Twilio is selling trust: branded calls, scoped keys, and stricter sender vetting.
Notion
Notion is turning Custom Agents into event-driven workers with their own runtime and billing.
See all Subsplash alternatives → · See all mailcow alternatives →
Recent activity from Subsplash and mailcow
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision A
- 2d agoSubsplashBe notified by email when a Workflow Card is complete
- 15d agoSubsplashIntroducing Group Member Limits + Group Finder Improvements
- 17d agoSubsplashEmail Automations for Workflows ⚡
- 19d agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3
- 23d agoSubsplashRegister Guests & Waive Payments from Dashboard
- 1mo agoSubsplashMedia and Campaign Data in Trends AI
- 2mo agomailcowThird May revision: unbound CVE and nginx 1.30.2
- 2mo agomailcowSecond May revision: quarantine table HTML escaping
- 2mo agomailcowSOGo 5.12.8 covering four upstream security issues
- 2mo agoSubsplashPeople Assistant: AI-Powered Filtering ⚡
- 2mo agomailcowMay base release: undisclosed CVE plus web UI escaping
Frequently asked questions
What is the difference between Subsplash and mailcow?
They serve adjacent needs but don't currently overlap on shipped themes. Subsplash is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 Subsplash better than mailcow?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Subsplash is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 Subsplash?
Top Subsplash alternatives in Comms are ranked by recent ship velocity. Browse the "Subsplash alternatives" section above for the current picks, or visit /alternatives/subsplash for the full list with editorial commentary on each.
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.