postmarkapp.com valid

Postmark

Postmark is a reliable transactional and bulk email service that helps developers deliver and track application emails. It provides REST APIs, SMTP support, webhooks, and comprehensive email templates to replace traditional SMTP with a scalable, developer-friendly solution.

Authority
57 reach 16 · trust 5 · quality 21 · freshness 15
Tier
listed
llms.txt
https://postmarkapp.com/llms.txt
Sections
9
Links
29
Size
28808 bytes
Popularity rank
#16089
Country
GB
First seen
2026-10-18T15:08:52.923Z
Last checked
2026-10-18T15:28:09.208Z
Badge
Agent Web Map badge for postmarkapp.com

Own this site? Verify it

Verified listings rank first, reach the featured tier (do-follow links) at 60 authority instead of 70, get a link in our llms.txt, a badge, breakage alerts, an editable profile, lookup analytics, and instant re-crawls. Prove ownership with any one of these, then call the verify endpoint (or your agent can do all of it, also over MCP).

  1. llms.txt link (recommended) — add this line to your llms.txt:
    - [Agent Web Map](https://agentwebmap.com/domain/postmarkapp.com?verify=awm_e3c251c64c827d8dff3fd8bc7ee47d99)
  2. DNS — add a TXT record:
    _agentwebmap.postmarkapp.com. TXT "awm-verify=awm_e3c251c64c827d8dff3fd8bc7ee47d99"
  3. Meta tag — in your homepage <head>:
    <meta name="agentwebmap-verify" content="awm_e3c251c64c827d8dff3fd8bc7ee47d99">
  4. Well-known file — serve the token at:
    https://postmarkapp.com/.well-known/agentwebmap-verify.txt  ->  awm_e3c251c64c827d8dff3fd8bc7ee47d99

Then: curl -X POST https://agentwebmap.com/v1/sites/postmarkapp.com/verify — the response contains your API key. Full docs.

Machine-readable: GET /v1/domain/postmarkapp.com · this page as Accept: application/json or text/markdown · MCP lookup_domain