Sulu
Sulu ships 2.6 and 3.0 in lockstep, and the 3.0 line still reads like a maintenance branch.
A side-by-side editorial comparison of Kit (formerly ConvertKit) and OneSignal — release velocity, themes, recent moves, and the top alternatives to consider.
Kit rebuilt its landing page editor, then handed the controls to an AI agent.
Kit's recent releases converge on one thing: giving creators a full publishing surface inside Kit rather than sending them to a third-party page builder. The landing page editor was rebuilt in June with 20+ templates and full control over layout, fonts and sections; custom favicons and the Creator profile to Newsletter site rename finished the job of making those pages feel owned rather than hosted. The newest release lets the Kit MCP build and edit those pages directly. Alongside runs an audience-intelligence thread - Subscriber Signals in early access - and network features letting creators request connections with each other.
OneSignal is arguing a new category into existence before showing the product behind it.
OneSignal's feed in this window is entirely editorial — no release notes at all. What it publishes is a positioning campaign for "autonomous lifecycle marketing": software that operates the customer lifecycle instead of marketers operating software. Around the category essays sit displacement pieces aimed at email-first tools and practical guides to mobile surfaces like Live Activities and SMS.
Kit's recent releases converge on one thing: giving creators a full publishing surface inside Kit rather than sending them to a third-party page builder. The landing page editor was rebuilt in June with 20+ templates and full control over layout, fonts and sections; custom favicons and the Creator profile to Newsletter site rename finished the job of making those pages feel owned rather than hosted. The newest release lets the Kit MCP build and edit those pages directly. Alongside runs an audience-intelligence thread - Subscriber Signals in early access - and network features letting creators request connections with each other.
The Kit MCP is the axis. It arrived in May as a read-and-analyze tool - ask questions about your list, create tags or broadcasts from Claude, ChatGPT or Cursor - and has now crossed into building the actual published artifact. That sequencing is deliberate: rebuild the editor as a structured, template-driven system first, then expose it to an agent, because an agent can only assemble a page that is composed of describable parts. The rename and favicon work point the same way, toward Kit as the place a creator's web presence lives rather than just where email is sent.
Expect the MCP surface to extend from landing pages into sequences and the newsletter site itself, and Subscriber Signals to move out of early access as the data layer the agent reasons over.
OneSignal's feed in this window is entirely editorial — no release notes at all. What it publishes is a positioning campaign for "autonomous lifecycle marketing": software that operates the customer lifecycle instead of marketers operating software. Around the category essays sit displacement pieces aimed at email-first tools and practical guides to mobile surfaces like Live Activities and SMS.
The through-line is a category land-grab. OneSignal defines the term first, then positions its multi-channel reach — push, SMS, in-app, lock-screen — as the reason an email-first stack cannot follow it there. One post points at AI agents taking over lifecycle tasks, the first hint of product underneath the argument, but the feed carries no release detail to confirm what actually shipped.
Expect the AI-teammate framing to harden into named, documented features, because the category argument now needs a product to point at. What ships and when is not determinable from these entries.
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 Kit (formerly ConvertKit) or OneSignal.
Sulu ships 2.6 and 3.0 in lockstep, and the 3.0 line still reads like a maintenance branch.
Nearly every release in this window carries security hardening — Pimcore is working through an injection sweep.
The v4 canary line is being renamed Build Awesome while 3.x is kept on pure maintenance.
Steady feature-then-patch cadence, with security reports rising because AI tools are finding them
Measurement gets granular while the API quietly opens ClickFunnels up to outside agents
n8n's daily patch train hides the real work: hardening its MCP server into a proper auth resource.
See all Kit (formerly ConvertKit) alternatives → · See all OneSignal alternatives →
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
They serve adjacent needs but don't currently overlap on shipped themes. Kit (formerly ConvertKit) 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.
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Kit (formerly ConvertKit) 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.
Top Kit (formerly ConvertKit) alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Kit (formerly ConvertKit) alternatives" section above for the current picks, or visit /alternatives/convertkit for the full list with editorial commentary on each.
Top OneSignal alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "OneSignal alternatives" section above for the current picks, or visit /alternatives/onesignal for the full list with editorial commentary on each.