Download websites that use Postscript

About Postscript

A name collision is worth clearing up before any number means anything. Postscript is also the name of a page description language used in printing and typesetting, and the word appears in unrelated products besides. Our entry refers to the vendor recorded as Postscript, whose product sits behind the site postscript.io, and the count reflects domains where our fingerprint for that vendor's tag matched. Anyone joining this list to anything about printing software will be joining the wrong thing entirely.

The product dates to 2018 and is distributed as Proprietary software, so each install represents an account with a contract behind it rather than a copied snippet. We file it under Marketing automation, the group of tools that push messages to a customer list on a schedule and on triggers such as an abandoned basket, a shipping update, or a lapsed buyer, whichever channel those messages eventually travel on. As of October 2026 we detect the tag on 93 sites.

Retention marketing tags are among the more commercially loaded fingerprints in a dataset. A shop does not install one until it has enough repeat traffic to justify the cost and enough of a list to send to, so the population is pre filtered for merchants with a real customer base rather than a storefront that launched last month and has yet to prove anything.

The tag is also a strong indicator of platform. Retention tooling of this kind attaches tightly to a hosted commerce platform and its install base tracks that platform's own growth, which means the list works as a lens on one ecosystem rather than as a neutral sample of online retail. Competing messaging vendors read it as a target population that already budgets for the category. Agencies read it as a qualification filter. Analysts read it as an observable proxy for a private company's traction, which is otherwise visible only in whatever the vendor chooses to announce.

What a downloadable list adds over a single domain lookup is movement and context. A lookup confirms that one merchant runs the tag today. The export shows which merchants adopted it since the previous release, which dropped it, what commerce platform and analytics sit alongside it, and whether the footprint concentrates in a particular country code or top level domain.

The data makes one claim and no more. We can see that the tag is present. We cannot see the size of a merchant's subscriber list, the volume they send, the plan they pay for, or whether the account is active at all, and the figure should be read exactly that far and no further.