On September 23, 2026, Postscript launched an email product, extending its platform beyond SMS and RCS for the first time. Here is a plain summary of what was announced, so brands that use Postscript, Klaviyo, or both can stay informed.
The short answer: Postscript now offers email alongside SMS and RCS, built on a shared customer profile. This post summarizes what Postscript has announced, based on its own materials and independent coverage, without recommending any platform change.
What Postscript actually launched
Postscript announced email alongside a new foundation it calls the Agentic Context Platform (ACP), a shared layer that stores customer context and uses it when a message is sent. According to the launch release and Postscript's own materials:
- An email editor and templates, with drag-and-drop flow building, triggers, conditions, branches, and split logic
- Segmentation and coordinated SMS and email flows
- A shared customer profile across email, SMS, and RCS, so existing Postscript SMS customers can add email without changing their SMS program
- Postscript Shopper, an AI agent layer that decides what each subscriber receives
- Migration support, plus deliverability operations such as intelligent queuing to meet mailbox provider requirements
- Access on a first come, first served basis, starting with existing Postscript customers
As reported by third-party coverage, the launch also includes identity resolution across email, phone, and Shopify records and multiple attribution models. Confirm specifics with Postscript before relying on them.
Why this matters
Postscript built its reputation on SMS, and its co-CEO said customers had asked for email for eight years. Postscript says it waited until it could build email on a new foundation designed around shared customer context. That tells you two things: there is real demand for one platform that runs both channels, and Postscript is bringing its SMS strengths, which it describes as conversational messaging and built-in compliance, into email.
How it works with existing setups
Postscript says existing SMS customers can add email without changing their SMS program, with the channels sharing one customer profile. Brands that use another email platform alongside Postscript SMS can continue to do so. Postscript describes its email product as an option for brands that want email and SMS in one place.
What to watch
- Eligibility and rollout updates from Postscript, since access began on a first come, first served basis
- Product documentation and feature details as they are published
- Examples from brands using the new product
For the latest details, see Postscript's email page.
FAQ
What did Postscript announce?
On September 23, 2026, Postscript launched an email product alongside its SMS and RCS products, on a shared customer profile and a new foundation it calls the Agentic Context Platform.
Is Postscript Email available to everyone?
The launch is first come, first served, starting with existing customers. Check Postscript's page for current eligibility.
What happens to my SMS program if I add Postscript Email?
Per Postscript, existing SMS programs continue without changes, with email added on a shared profile.
How ATTN helps
ATTN is a Klaviyo Platinum partner agency that also builds SMS programs on Postscript. We keep clients informed on platform news and help brands build channel strategies that fit their goals. Talk to our retention team about your email and SMS program.
ATTN is a marketing agency, not a law firm. This article is general information, not legal advice. Laws and carrier rules on consent, messaging, and privacy change often and vary by state and situation, so consult your own attorney before making decisions about your program.