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Comparison · Mkt Auto
Postscript vs SendPortal
A side-by-side editorial comparison of Postscript and SendPortal — release velocity, themes, recent moves, and the top alternatives to consider.
Postscript vs SendPortal: at a glance
What is Postscript?
Postscript is handing SMS marketing to an agent that decides each subscriber's next message
Postscript is an SMS and RCS platform for Shopify merchants, and this archive shows it working two fronts at once. On acquisition it has multiplied the places a subscriber can opt in — embedded forms droppable on any page, standalone landing pages built on the popup editor, and Onsite Opt-in at Shoptin checkout. On messaging it is building Shopper, a conversational AI layer that now answers, analyses and increasingly initiates. The feed carries no publication dates, so this is an archive rather than a timeline.
What is SendPortal?
SendPortal resurfaces with a v4 patch release, its first tag since 2020.
SendPortal's last tagged release before this month was v1.0.3 in July 2020. On October 22 it published v4.0.0.1, which fixes sp:install skipping migrations on fresh installs and a route-caching failure from a duplicate logout route. The changelog link implies a v4.0.0 release just before it, which isn't in the tracked entries.
Postscript vs SendPortal: editorial side-by-side
Postscript
0.0MKT AUTO
Postscript is handing SMS marketing to an agent that decides each subscriber's next message
◆ Current state
Postscript is an SMS and RCS platform for Shopify merchants, and this archive shows it working two fronts at once. On acquisition it has multiplied the places a subscriber can opt in — embedded forms droppable on any page, standalone landing pages built on the popup editor, and Onsite Opt-in at Shoptin checkout. On messaging it is building Shopper, a conversational AI layer that now answers, analyses and increasingly initiates. The feed carries no publication dates, so this is an archive rather than a timeline.
◆ Where it's heading
The centre of gravity is shifting from campaign tooling to per-subscriber decisioning. Shopper began as a responder, then gained a research surface over its own conversations, and now decides send timing and content for each individual. Alongside that, RCS is the delivery-side bet: webviews, dynamic product photos and tappable suggested replies all work to make the message thread the destination rather than a pointer to the storefront. Experimentation is being pushed into more of the journey rather than confined to campaign sends.
◆ Prediction
Expect the remaining hand-built primitives — static flows and manual segments — to be folded into Shopper's decisioning, and each new RCS capability to keep shipping with an automatic MMS or browser fallback so merchants can adopt it without maintaining a second path.
SendPortal
2.5MKT AUTO
SendPortal resurfaces with a v4 patch release, its first tag since 2020.
◆ Current state
SendPortal's last tagged release before this month was v1.0.3 in July 2020. On October 22 it published v4.0.0.1, which fixes sp:install skipping migrations on fresh installs and a route-caching failure from a duplicate logout route. The changelog link implies a v4.0.0 release just before it, which isn't in the tracked entries.
◆ Where it's heading
A major version followed by fixes to the installer suggests the project is active again and new installs are being tested. With two tagged releases six years apart, there's no cadence to read yet.
◆ Prediction
If v4 is a real revival, more point releases should follow within weeks; another long silence would mean v4 was a one-off.
Alternatives to Postscript 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 Postscript or SendPortal.
Activepieces
Activepieces backports October's Node.js security update to five release lines.
Gumloop
Gumloop 13.1 lets live artifacts drive agents through the SDK and opens outputs in Office.
Buttondown
Buttondown closes an API send loophole and blocks confirmation-email floods in its daily fixes.
Formidable Forms
Formidable Forms 7.0.1 makes the builder preview reflect more Pro settings as they change.
Pimcore
Pimcore 2026.3.3.1 tightens the Twig sandbox again, two days after 2026.3.3.
See all Postscript alternatives → · See all SendPortal alternatives →
Recent activity from Postscript and SendPortal
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7d agoSendPortalv4.0.0.1: fixes fresh-install migrations and route caching
- 6y agoSendPortalv1.0.3: Drops laracatch-client dependency
Frequently asked questions
What is the difference between Postscript and SendPortal?
They serve adjacent needs but don't currently overlap on shipped themes. SendPortal is currently shipping more aggressively (velocity 2.5 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 Postscript better than SendPortal?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. SendPortal is currently shipping more aggressively (velocity 2.5 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 Postscript?
Top Postscript alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Postscript alternatives" section above for the current picks, or visit /alternatives/postscript 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.