Customer.io
Design Studio becomes the one surface where every Customer.io message is built
A side-by-side editorial comparison of Platformly and Kit (formerly ConvertKit) — release velocity, themes, recent moves, and the top alternatives to consider.
Platformly is shipping SEO content, not product updates — last release was summer 2023
The visible feed is an SEO treadmill of email-marketing-automation posts — best-practices, what-is, future-of — with no product release surfaced since the Summer 2023 update. Cadence picked up in mid-2025 but entirely for educational content.
Kit pushes past email tooling toward audience intelligence and AI-tool access.
Kit (formerly ConvertKit) is layering two new capabilities on top of its email and automation core: subscriber intelligence and AI-tool integration. Alongside those, it shipped a navigation redesign, a rebuilt landing page editor, and a rename of Creator profile to Newsletter site. The base product keeps getting incremental search and editor polish while the headline bets are data and AI.
The visible feed is an SEO treadmill of email-marketing-automation posts — best-practices, what-is, future-of — with no product release surfaced since the Summer 2023 update. Cadence picked up in mid-2025 but entirely for educational content.
The editorial pattern points to a domain-authority play around the email-marketing-automation keyword cluster rather than feature storytelling. Either the product is in extended quiet mode or releases are happening but not being narrated publicly through the channels being crawled.
The next material signal will likely be either a release that breaks the multi-year silence or further drift into pure content publishing. Until then, buyers reading the blog see strategy advice, not platform evolution.
Kit (formerly ConvertKit) is layering two new capabilities on top of its email and automation core: subscriber intelligence and AI-tool integration. Alongside those, it shipped a navigation redesign, a rebuilt landing page editor, and a rename of Creator profile to Newsletter site. The base product keeps getting incremental search and editor polish while the headline bets are data and AI.
The direction is from send-and-automate toward understand-your-audience and operate-Kit-from-anywhere. Subscriber Signals adds an audience data layer that competes with standalone enrichment tools, while the Kit MCP exposes the platform to external AI assistants. Together they reposition Kit as creator infrastructure rather than just an email sender.
Expect Subscriber Signals to move from early access toward general availability and the MCP to graduate from beta with broader write actions across lists, sequences, and broadcasts.
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 Platformly or Kit (formerly ConvertKit).
Design Studio becomes the one surface where every Customer.io message is built
Optimove is quietly building a loyalty-and-gamification platform out through its developer API.
Insider's feed is a high-volume marketing blog, not a changelog — the product signal is buried.
Repurpose.io grows from video reposting into an any-format cross-platform publisher.
WPForms opens its form builder to outside AI assistants like ChatGPT and Claude.
Stensul is betting its roadmap on governing AI-generated marketing content before it ships.
See all Platformly alternatives → · See all Kit (formerly ConvertKit) alternatives →
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
Both compete on the same themes — email-marketing — within Mkt Auto. Kit (formerly ConvertKit) is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 0.0), 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 Platformly alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Platformly alternatives" section above for the current picks, or visit /alternatives/platformly for the full list with editorial commentary on each.
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.