Softwr

Marketing · head to head

Postmark vs uBlock Origin

Postmark logo

Postmark

Marketing

No hidden fees, no guesswork. Just the features you need, at a price that makes sense

From
Free
Rated
-
Full reviewWebsite
uBlock Origin logo

uBlock Origin

Browser Extensions

Free, open-source ad content blocker

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Postmark free tier caps at 100 emails per month with no overages allowed; uBlock Origin cNAME uncloaking of third-party trackers disguised as first-party is only available on Firefox, because the required DNS API does not exist in Chromium

Where they differ

Only the attributes on which Postmark and uBlock Origin actually diverge.

Attributes where Postmark and uBlock Origin differ
AttributePostmarkuBlock Origin
Pricing modelfreemiumfree
PlatformsWebChrome, Firefox, Edge, Opera
CategoryMarketingBrowser Extensions
FoundedUnknown2014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Postmark

Nothing recorded that uBlock Origin does not also cover.

Only in uBlock Origin

  • Ad blocking
  • Tracker blocking
  • Malware domain blocking
  • Custom filter lists
  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

The jobs each tool is most often brought in to do.

Postmark

No use cases recorded yet. See the Postmark review.

uBlock Origin

  • Blocking advertisements and third-party trackers in the browsernot Postmark
  • Running a default-deny policy on third-party scripts and resourcesnot Postmark
  • Element picking and cosmetic filtering of unwanted page contentnot Postmark

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Postmark

  • Free tier caps at 100 emails per month with no overages allowed
  • Basic plan ($15/mo) includes 10,000 emails then charges $1.80 per 1,000 extra; Pro and Platform tiers have their own lower per-1,000 overage rates ($1.30 and $1.20), so cost scales per email beyond the included volume
  • Custom high-volume pricing above the published tiers requires contacting sales

uBlock Origin

  • CNAME uncloaking of third-party trackers disguised as first-party is only available on Firefox, because the required DNS API does not exist in Chromium
  • HTML filtering of response bodies requires the webRequest.filterResponseData API, which is only available in Firefox
  • On Chromium-based browsers uBO is not reliably ready at browser launch, so tracker and advertisement payloads can reach already-open tabs before filtering starts
  • Pre-fetch blocking is not reliable on Chromium-based browsers because they give websites precedence over user settings
  • The Chromium build does not use the WebAssembly filtering code paths, because the extra manifest permission would create friction publishing to the Chrome Web Store
  • LZ4 storage compression is Firefox only, and on Chromium in incognito mode IndexedDB resets, so uBO launches with out-of-date filter lists

Pricing, plan by plan

Postmark

Free

No published plan breakdown. See the Postmark review.

uBlock Origin

Free
  • FreeFree
    • Ad blocking
    • Tracker blocking
    • Custom filter lists

Which should you pick?

Choose Postmark if

  • You want to start without paying.
Postmark review

Choose uBlock Origin if

  • You need ad blocking.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want tracker blocking.
uBlock Origin review

Questions people ask

Is Postmark or uBlock Origin better?
Neither clearly leads. Postmark starts at Free and uBlock Origin at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Postmark or uBlock Origin?
Postmark starts at Free and uBlock Origin at Free.
Does Postmark or uBlock Origin run on more platforms?
Postmark runs on Web. uBlock Origin runs on Chrome, Firefox, Edge, Opera.
Can I use Postmark for free?
Both have a free tier, so you can try either at no cost before committing.
What can Postmark do that uBlock Origin cannot?
uBlock Origin covers Ad blocking, Tracker blocking, Malware domain blocking, Custom filter lists.
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