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Rspamd vs Subsplash

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

Rspamd vs Subsplash: at a glance

FeatureRspamdSubsplash
SectorCommsComms
Velocity score5.06.3
Sparks · 30d01
Top themesspam filtering, neural registries, fuzzy matching, resource boundingchurch-management, workflow-automation, ai-assistants, giving-reconciliation
Last editorial update2h ago1d ago
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What is Rspamd?

Rspamd is rebuilding its neural filter into a pluggable framework — and just fixed a controller that accepted any password.

The 4.1.x series has moved fast on two fronts. The neural plugin gained pluggable feature-provider and ANN-architecture registries, multi-head attention pooling, slice and concat graph transforms, and a static_embed provider running a WordPiece subword tokenizer over a static embedding matrix. Separately the fuzzy subsystem got structured match results with a diagnostics API, Redis-persisted shingle sets and per-hash introspection. 4.1.4 in July fixed a critical controller bug where a malformed password hash caused it to fail open and accept any password, alongside a set of PCRE2 leaks and unbounded-match conditions in the regexp engine.

Read the full Rspamd trajectory →

What is Subsplash?

Subsplash is wiring automation and AI through the church admin stack it already owned

Workflows came out of beta in mid-July with per-step email automation, then immediately gained completion notifications for team leaders. Around it, the administrative surfaces are being rebuilt in sequence: Transfers and reconciliation now tracks who reconciled what and when, Groups gained member limits with a Full badge and finder filters, and event managers can register guests and waive payments directly from the dashboard. The AI line is filling in too — Trends AI added media and campaign data on top of giving, people, attendance and groups, following the natural-language People Assistant in May.

Read the full Subsplash trajectory →

Rspamd vs Subsplash: editorial side-by-side

R
Rspamd
COMMS
5.0

Rspamd is rebuilding its neural filter into a pluggable framework — and just fixed a controller that accepted any password.

◆ Current state

The 4.1.x series has moved fast on two fronts. The neural plugin gained pluggable feature-provider and ANN-architecture registries, multi-head attention pooling, slice and concat graph transforms, and a static_embed provider running a WordPiece subword tokenizer over a static embedding matrix. Separately the fuzzy subsystem got structured match results with a diagnostics API, Redis-persisted shingle sets and per-hash introspection. 4.1.4 in July fixed a critical controller bug where a malformed password hash caused it to fail open and accept any password, alongside a set of PCRE2 leaks and unbounded-match conditions in the regexp engine.

◆ Where it's heading

The neural work is the strategic thread: turning a fixed classifier into a registry where feature extraction and network architecture are both swappable is what lets learned filtering evolve without forking the daemon. Around it, the project is systematically bounding resource use under adversarial input — regexp heap limits, zip-bomb extraction caps, per-message word budgets, a Lua URL filter consulted twice per field instead of once per byte. The front end is being simplified in the opposite direction, with jQuery, Font Awesome and FooTable all removed outright.

◆ Prediction

The registries and the static embedding provider arrived one release apart, so the piece not yet visible in these notes is a shipped model that uses them. Whether Rspamd distributes one or leaves it to operators is not indicated here.

S6.3

Subsplash is wiring automation and AI through the church admin stack it already owned

◆ Current state

Workflows came out of beta in mid-July with per-step email automation, then immediately gained completion notifications for team leaders. Around it, the administrative surfaces are being rebuilt in sequence: Transfers and reconciliation now tracks who reconciled what and when, Groups gained member limits with a Full badge and finder filters, and event managers can register guests and waive payments directly from the dashboard. The AI line is filling in too — Trends AI added media and campaign data on top of giving, people, attendance and groups, following the natural-language People Assistant in May.

◆ Where it's heading

Two threads run in parallel and are starting to meet. One is turning manual church-admin chores into configured automation — workflows that send their own emails, notify on completion, and enforce group capacity without a staff member watching. The other is putting a natural-language layer over an increasingly complete data set, which only becomes useful once giving, attendance, media and campaigns all live in the same place. Recent releases have been closing the gaps in that data set.

◆ Prediction

The obvious convergence is Workflows becoming triggerable from the data — a Trends AI segment or People Assistant query that drops matching people onto a workflow board automatically. Reconciliation gaining an export or accounting-package integration is the other near-term candidate given how much structure was just added to Transfers.

Alternatives to Rspamd and Subsplash

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 Rspamd or Subsplash.

See all Rspamd alternatives → · See all Subsplash alternatives →

Recent activity from Rspamd and Subsplash

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

  1. 1d agoSubsplashTransfers & Reconciliation
  2. 8d agoSubsplashBe notified by email when a Workflow Card is complete
  3. 9d agoRspamdController accepted any password on a malformed hash
  4. 12d agoRspamdFuzzy diagnostics API, and jQuery dropped from the WebUI
  5. 16d agoRspamdStatic embedding neural provider and composite Lua conditions
  6. 21d agoSubsplashIntroducing Group Member Limits + Group Finder Improvements
  7. 23d agoSubsplashEmail Automations for Workflows
  8. 29d agoSubsplashRegister Guests & Waive Payments from Dashboard
  9. 1mo agoSubsplashMedia and Campaign Data in Trends AI
  10. 1mo agoRspamdPluggable neural feature and architecture registries
  11. 2mo agoRspamdLoad-aware upstream selection and chain-aware URL resolution
  12. 4mo agoRspamdProxy milter fd leak and ARC multi-hop parsing fixed

Frequently asked questions

What is the difference between Rspamd and Subsplash?

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 Rspamd better than Subsplash?

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 Rspamd?

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

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.