OpenEMM
OpenEMM ships versioned builds on schedule, with no notes on what changed.
Comparison · Mkt Auto
Buttondown vs SendPortal
A side-by-side editorial comparison of Buttondown and SendPortal — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:newsletters
Buttondown vs SendPortal: at a glance
What is Buttondown?
Buttondown keeps shipping daily fixes, now for portal sign-in and embedded forms.
Buttondown posts a changelog entry almost every weekday. The recent run is mostly email-client rendering fixes (Outlook for Windows, Apple Mail dark mode), API and form correctness, and a Gmail clipping estimate in the preview. October 9 added alerts when Bluesky rejects an app password; October 10 fixed hosted forms refusing to load in iframes; October 12 fixed subscribers with capitalized emails being unable to sign in to the portal.
What is SendPortal?
SendPortal hasn't tagged a release since July 2020.
The only tracked release is v1.0.3 from July 2020, which removed the laracatch-client dependency. No later tags appear in the feed, so for tracking purposes the project looks dormant.
Buttondown vs SendPortal: editorial side-by-side
Buttondown
5.0MKT AUTO
Buttondown keeps shipping daily fixes, now for portal sign-in and embedded forms.
◆ Current state
Buttondown posts a changelog entry almost every weekday. The recent run is mostly email-client rendering fixes (Outlook for Windows, Apple Mail dark mode), API and form correctness, and a Gmail clipping estimate in the preview. October 9 added alerts when Bluesky rejects an app password; October 10 fixed hosted forms refusing to load in iframes; October 12 fixed subscribers with capitalized emails being unable to sign in to the portal.
◆ Where it's heading
The product is in a polish phase driven by user reports, many credited by name. Subscriber-facing entry points (embedded forms, portal sign-in) keep getting fixed alongside rendering, deliverability and the Bluesky/standard.site publishing integration.
◆ Prediction
Expect more pre-send checks and embed, sign-in or rendering fixes rather than a large feature; nothing in these entries signals a bigger launch.
SendPortal
0.0MKT AUTO
SendPortal hasn't tagged a release since July 2020.
◆ Current state
The only tracked release is v1.0.3 from July 2020, which removed the laracatch-client dependency. No later tags appear in the feed, so for tracking purposes the project looks dormant.
◆ Where it's heading
With no tagged release in over six years, nothing is visible to project forward. Users should treat it as a stable but unmaintained codebase unless activity shows up elsewhere.
◆ Prediction
No new release is expected based on the entries shown.
Alternatives to Buttondown and SendPortal
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 Buttondown or SendPortal.
n8n
n8n patches how agents resume skill-loaded tools, on both maintained release lines.
Gumloop
Gumloop agents now carry their own secrets and can run fully incognito.
Formidable Forms
Formidable Forms keeps patching its add-on fleet, now fixing a datepicker that silently rewrote saved dates.
Nutshell
Nutshell adds CallRail call attribution after a quiet September
Moosend
Moosend's feed is still all blog posts; no product release has surfaced in two months.
See all Buttondown alternatives → · See all SendPortal alternatives →
Recent activity from Buttondown and SendPortal
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoButtondownPortal sign-in fixed for emails typed with capital letters
- 3d agoButtondownFixes for iframe-embedded forms and premium-subscriber alerts
- 4d agoButtondownBluesky password alerts, CSS control over embeds, incident pinning
- 5d agoButtondownGmail clipping estimate added to email preview
- 6d agoButtondownDark mode fixes for link previews and Apple Mail
- 7d agoButtondownFix unreadable email buttons in Outlook for Windows
- 6y agoSendPortalv1.0.3: Drops laracatch-client dependency
Frequently asked questions
What is the difference between Buttondown and SendPortal?
Both compete on the same themes — newsletters — within Mkt Auto. Buttondown is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Buttondown better than SendPortal?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Buttondown is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 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 Buttondown?
Top Buttondown alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Buttondown alternatives" section above for the current picks, or visit /alternatives/buttondown for the full list with editorial commentary on each.
What are the best alternatives to SendPortal?
Top SendPortal alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "SendPortal alternatives" section above for the current picks, or visit /alternatives/sendportal for the full list with editorial commentary on each.