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Roundcube vs Subsplash

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

Roundcube vs Subsplash: at a glance

FeatureRoundcubeSubsplash
SectorCommsComms
Velocity score5.02.5
Sparks · 30d00
Top themeswebmail, security, lts-maintenance, imapchurch-platform, workflow-automation, people-management, giving-management
Last editorial update15h ago1h ago
WebsiteVisit →—

What is Roundcube?

Roundcube's October release patches 13 more holes on both branches at once.

Roundcube shipped 1.7.5 and 1.6.20 on 19 October, again as a matched pair, fixing IMAP command injection via the _uid parameter, mail header injection in bounce and reply paths, a session object-injection primitive, ImageMagick limits bypasses, an SSRF filter bypass via NAT64 and several remote-content blocking bypasses. It is the fifth paired security release since June.

Read the full Roundcube trajectory →

What is Subsplash?

Subsplash gives church staff notes on every person and every Workflow card.

Subsplash runs giving, media, people and workflow tools for churches. Late September brought notes on People profiles and Workflow cards, board search and hide-completed checklists in Workflows, gift totals and recurring-gift status in Giving, and timestamped share links for media. October added multi-select actions on People.

Read the full Subsplash trajectory →

Roundcube vs Subsplash: editorial side-by-side

R5.0

Roundcube's October release patches 13 more holes on both branches at once.

◆ Current state

Roundcube shipped 1.7.5 and 1.6.20 on 19 October, again as a matched pair, fixing IMAP command injection via the _uid parameter, mail header injection in bounce and reply paths, a session object-injection primitive, ImageMagick limits bypasses, an SSRF filter bypass via NAT64 and several remote-content blocking bypasses. It is the fifth paired security release since June.

◆ Where it's heading

Monthly security releases on both the 1.7 and LTS 1.6 lines have become the product's main output, driven by outside researchers. Several fixes revisit earlier ones, such as CSS-escape blocking bypasses fixed 'again', which suggests the content-sanitising code is still being mapped.

◆ Prediction

Another paired 1.7.x and 1.6.x security release in about a month is the pattern; feature work isn't visible in these entries.

S2.5

Subsplash gives church staff notes on every person and every Workflow card.

◆ Current state

Subsplash runs giving, media, people and workflow tools for churches. Late September brought notes on People profiles and Workflow cards, board search and hide-completed checklists in Workflows, gift totals and recurring-gift status in Giving, and timestamped share links for media. October added multi-select actions on People.

◆ Where it's heading

The platform is filling in the record-keeping that church staff did in other tools: notes, handoffs, follow-ups and giving totals now live next to the person or card. Workflows keeps getting features for busy boards and team handoffs. The releases are practical and incremental rather than new product lines.

◆ Prediction

Expect Workflows and People to keep converging, for example notes or tasks shared between a person and their cards. The entries say nothing new about the AI features mentioned earlier in the year.

Alternatives to Roundcube 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 Roundcube or Subsplash.

See all Roundcube alternatives → · See all Subsplash alternatives →

Recent activity from Roundcube and Subsplash

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

  1. 3d agoSubsplashPeople Multi-Select
  2. 14d agoRoundcubeRoundcube Webmail 1.7.5
  3. 14d agoRoundcubeRoundcube Webmail 1.6.20
  4. 1mo agoSubsplashGift totals and recurring status in Giving
  5. 1mo agoSubsplashNotes on People
  6. 1mo agoSubsplashShare links that start a video at the current timestamp
  7. 1mo agoSubsplashCard search and cleaner checklists in Workflows
  8. 1mo agoSubsplashNotes on Workflow Cards
  9. 1mo agoRoundcubeRoundcube Webmail 1.7.4
  10. 1mo agoRoundcubeRoundcube Webmail 1.6.19
  11. 2mo agoRoundcubeRoundcube Webmail 1.7.3
  12. 2mo agoRoundcubeRoundcube Webmail 1.6.18

Frequently asked questions

What is the difference between Roundcube and Subsplash?

They serve adjacent needs but don't currently overlap on shipped themes. Roundcube is currently shipping more aggressively (velocity 5.0 vs 2.5), 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 Roundcube better than Subsplash?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Roundcube is currently shipping more aggressively (velocity 5.0 vs 2.5), 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 Roundcube?

Top Roundcube alternatives in Comms are ranked by recent ship velocity. Browse the "Roundcube alternatives" section above for the current picks, or visit /alternatives/roundcube 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.