AI readiness leaderboard · Email marketing
AI readiness of postmarkapp.com: 100/100
100/100
We checked postmarkapp.com on 2026-10-18 with our free checker: six scored tests plus evidence for each finding. The score reflects the site on that date. The site may have changed after that date.
| Test | Result | Points |
|---|---|---|
| llms.txt | Yes | 15 of 15 |
| JSON-LD schema on the homepage | Yes | 20 of 20 |
| Meta description | Yes | 10 of 10 |
| Text readable without JavaScript | Yes | 20 of 20 |
| Sitemap | Yes | 10 of 10 |
| AI crawlers allowed in robots.txt | 8 of 8 | 25 of 25 |
Compared with Email marketing
postmarkapp.com ranks 12 of 21 email marketing sites in this scan (ties share the order by domain name). The median score in this group is 100. 15 of 21 have an llms.txt file.
Findings with evidence
ImproveJSON-LD: 3 blocks, types Organization, Person, Place, PostalAddress, WebSite, SoftwareApplication, Offer, AggregateRating
Person is missing recommended url. Offer is missing recommended availability.
Fix: Fix the listed properties, then retest at validator.schema.org.
ImproveServer responded in 1069 ms
Time to response headers from our checker. Final URL: https://postmarkapp.com/
Fix: Slow responses can make crawlers give up. Add page caching or a CDN in front of the homepage.
19 checks passed or noted
PassGPTBot (OpenAI, training): allowed on /
User-agent: GPTBot Allow: / Matching rule: "allow: /" in group "gptbot".
PassOAI-SearchBot (OpenAI, ChatGPT search): allowed on /
User-agent: OAI-SearchBot Allow: / Matching rule: "allow: /" in group "oai-searchbot".
PassChatGPT-User (OpenAI, live fetch for users): allowed on /
User-agent: ChatGPT-User Allow: / Matching rule: "allow: /" in group "chatgpt-user".
PassClaudeBot (Anthropic, training): allowed on /
User-agent: ClaudeBot Allow: / Matching rule: "allow: /" in group "claudebot".
PassClaude-SearchBot (Anthropic, Claude search): allowed on /
User-agent: Claude-SearchBot Allow: / Matching rule: "allow: /" in group "claude-searchbot".
PassPerplexityBot (Perplexity, search index): allowed on /
User-agent: PerplexityBot Allow: / Matching rule: "allow: /" in group "perplexitybot".
PassGoogle-Extended (Google, Gemini training control): allowed on /
User-agent: Google-Extended Allow: / Matching rule: "allow: /" in group "google-extended".
PassCCBot (Common Crawl, open dataset): allowed on /
User-agent: CCBot Allow: / Matching rule: "allow: /" in group "ccbot".
Passllms.txt found and well formed
First line: "# Postmark". 9 ## sections, 29 links, 28799 bytes.
NoteNo llms-full.txt
GET /llms-full.txt returned 404.
Fix: Optional: publish /llms-full.txt with the full text of key pages for tools that want more than a map.
PassTitle, 60 characters
<title>Postmark: Fast, Reliable Email Delivery Service | SMTP | API</title>
PassMeta description, 157 characters
content="Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers."
PassOpen Graph tags present
og:title: Postmark: Fast, Reliable Email Delivery Service | SMTP | API og:description: Send transactional and marketing emails and get them to the inbox on time, every time. Po… og:image: https://postmarkapp.com/images/logo-stamp-social.png
PassCanonical link set
<link rel="canonical" href="https://postmarkapp.com/">
PassLanguage declared: en
<html lang="en">
Pass1 H1 heading
<h1>The email delivery service that people actually like</h1>
Pass11,477 characters of text without JavaScript
Text starts: "Postmark: Fast, Reliable Email Delivery Service | SMTP | API 🤖 Teach your AI coding agent how to send email with Postmark Skills Learn more x Postmark Log In …"
PassSitemap found, 957 URLs
robots.txt: Sitemap: https://postmarkapp.com/sitemap.xml GET https://postmarkapp.com/sitemap.xml returned 200.
PassHTML size 94 KB, 9 script tags
0 render-blocking scripts in <head>
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See how all 21 email marketing sites compare: common problems, real evidence and the full table.
Scoring: llms.txt 15, JSON-LD 20, meta description 10, readable text 20, sitemap 10, AI crawler access 25. Want this page changed or removed? Email [email protected].
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