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Comparison · Mkt Auto
Flodesk vs Sulu
A side-by-side editorial comparison of Flodesk and Sulu — release velocity, themes, recent moves, and the top alternatives to consider.
Flodesk vs Sulu: at a glance
What is Flodesk?
Flodesk just moved its analytics out of the dashboard and into Claude and ChatGPT.
Flodesk ships one clearly-scoped feature at a time, roughly twice a month, and the recent run has been list hygiene and account security: a self-maintaining unengaged-subscriber segment, reversible archiving, subject-line A/B testing, calendar view, and multi-factor authentication. The newest release breaks that pattern — a connector that lets members query their own email, subscriber, form and sales data from inside Claude or ChatGPT, read-only, at no extra cost.
What is Sulu?
Sulu ships 2.6 and 3.0 in lockstep, and the 3.0 line still reads like a maintenance branch.
Sulu is a Symfony-based CMS for developer-built sites, and its release process is a synchronised pair: every 3.0.x patch ships within a minute of the matching 2.6.x patch, carrying largely the same pull requests. Six releases in five months — 3.0.8/2.6.25, 3.0.7/2.6.24, 3.0.6/2.6.23 — are almost entirely fixes, editor upgrades and framework compatibility work. A security advisory was patched across both branches in March.
Flodesk vs Sulu: editorial side-by-side
Flodesk
6.3MKT AUTO
Flodesk just moved its analytics out of the dashboard and into Claude and ChatGPT.
◆ Current state
Flodesk ships one clearly-scoped feature at a time, roughly twice a month, and the recent run has been list hygiene and account security: a self-maintaining unengaged-subscriber segment, reversible archiving, subject-line A/B testing, calendar view, and multi-factor authentication. The newest release breaks that pattern — a connector that lets members query their own email, subscriber, form and sales data from inside Claude or ChatGPT, read-only, at no extra cost.
◆ Where it's heading
Everything before this was about removing work inside the product; the connector removes the product from the interaction entirely for the questions people ask most. Flodesk states this is phase one, with audience segmentation and subscriber management to follow, which would turn a read-only connector into a place the account is actually operated. The security work — MFA extended to third-party API authorizations — reads in hindsight as the prerequisite that had to land first.
◆ Prediction
The stated roadmap points to write access next, starting with segmentation and subscriber management, which is where a read-only connector becomes an operating surface. What is unclear from the entries is whether campaign creation and sending follow, since that is where an external agent acting on a member's list gets genuinely consequential.
Sulu
5.0MKT AUTO
Sulu ships 2.6 and 3.0 in lockstep, and the 3.0 line still reads like a maintenance branch.
◆ Current state
Sulu is a Symfony-based CMS for developer-built sites, and its release process is a synchronised pair: every 3.0.x patch ships within a minute of the matching 2.6.x patch, carrying largely the same pull requests. Six releases in five months — 3.0.8/2.6.25, 3.0.7/2.6.24, 3.0.6/2.6.23 — are almost entirely fixes, editor upgrades and framework compatibility work. A security advisory was patched across both branches in March.
◆ Where it's heading
Three threads run through the pairs. Editor upkeep is constant, with CKEditor moving to 47 LTS and then 48 and the fallout — table widgets, webpack font builds — fixed release by release. Framework compatibility is the second: Request->get calls replaced for Symfony 8, PHPUnit 13 and PHPStan kept green on lowest dependencies. The third and most interesting is data-model cleanup on the 3.0 side, where tags migrated from names to IDs behind a newly added DoctrineMigrationsBundle, with smart-content filters reworked to match. What is not visible is any capability that exists on 3.0 and not on 2.6 — a major version that is not yet behaving like one.
◆ Prediction
Expect the paired-release rhythm to continue with more Symfony 8 preparation and CKEditor 48 fallout. The open question is when 3.0 starts receiving work that is not upmerged from 2.6; until then the major version number is not buying users anything.
Alternatives to Flodesk and Sulu
Other Mkt Auto 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 Flodesk or Sulu.
GetResponse
Ecommerce blocks keep landing while open tracking gets a regulatory escape hatch
Buttondown
Buttondown documents its events API, opening dashboard analytics to anyone who wants to pull them
Gumloop
The reporting layer arrives, and it counts what agents did and what they cost.
Customer.io
The AI agent moves into Slack, so operating Customer.io no longer means opening it.
n8n
Four release lines in parallel, and nearly every patch lands on the agent builder.
See all Flodesk alternatives → · See all Sulu alternatives →
Recent activity from Flodesk and Sulu
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoFlodeskClaude Connector and ChatGPT Plugin ⚡
- 15d agoFlodeskMulti-factor Authentication (MFA)
- 16d agoFlodeskUnengaged Subscribers segment
- 1mo agoSuluSulu 3.0.8 validates selection filter params at build time
- 1mo agoSuluSulu 2.6.25 adds a redirect after SSO login
- 2mo agoFlodeskA/B test your subject lines
- 2mo agoFlodeskCalendar view
- 2mo agoSuluSulu 3.0.7 fixes smart-content filtering and speeds up indexing
- 2mo agoSuluSulu 2.6.24 upgrades CKEditor to version 48
- 3mo agoFlodeskArchive subscribers
- 3mo agoSuluSulu 3.0.6 migrates tag names to IDs with Doctrine migrations
- 3mo agoSuluSulu 2.6.23 moves to CKEditor 47 LTS and preps Symfony 8
Frequently asked questions
What is the difference between Flodesk and Sulu?
They serve adjacent needs but don't currently overlap on shipped themes. Flodesk 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 Flodesk better than Sulu?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Flodesk 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 Mkt Auto products to evaluate alongside.
What are the best alternatives to Flodesk?
Top Flodesk alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Flodesk alternatives" section above for the current picks, or visit /alternatives/flodesk for the full list with editorial commentary on each.
What are the best alternatives to Sulu?
Top Sulu alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Sulu alternatives" section above for the current picks, or visit /alternatives/sulu for the full list with editorial commentary on each.