Postmark
(https://postmarkapp.com) 📸 Data Snapshot: May 24, 2026Inspect the JSON-LD. Is there an Organization or Person schema, and does it carry sameAs links to real external profiles (LinkedIn, socials)? Missing schema or no identity declaration signals an anonymous entity.
Authority gaps are minimal. The schema_json provides detailed organizational identity, including the founder’s name (Jason VandeBoom) and a physical headquarters address in Chicago. The technical implementation is consistent with the brand’s ‘developer-first’ authority, featuring a robust heading hierarchy and comprehensive structured data for the software application.
There is a minor disconnect regarding performance claims like ‘lightning fast’ and ‘stellar deliverability.’ While these are industry-standard superlatives, the site provides documentation on how to achieve them (e.g., SPF/DKIM setup) but lacks a linked, real-time status page or independently audited delivery metrics to prove the ‘billions’ claim.
Identity & Authority is read from the structured data first: whether the site declares who it is in machine-readable schema, with verifiable identity links. Below is the schema captured per page, then the external proof links that support (or fail to support) that identity.
🔗 Identity & Technical Layer — schema JSON-LD: identity chains, entity gaps
Homepage schema
[
{
"@context": "http://schema.org",
"@type": "Organization",
"url": "https://postmarkapp.com",
"logo": "https://postmarkapp.com/images/logo-stamp-social.png",
"name": "Postmark",
"founder": [
{
"@type": "Person",
"name": "Jason VandeBoom",
"jobTitle": "CEO"
}
],
"foundingLocation": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"location": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"sameAs": [
"https://twitter.com/postmarkapp"
]
},
{
"@context": "http://schema.org",
"@type": "WebSite",
"name": "Postmark",
"url": "https://postmarkapp.com"
},
{
"@context": "https://schema.org",
"@type": "SoftwareApplication",
"name": "Postmark",
"applicationCategory": "WebApplication",
"operatingSystem": "Web-based",
"description": "Postmark is a fast and reliable transactional email service that delivers your application's emails on time, every time. Send and track transactional emails with industry-leading deliverability.",
"url": "https://postmarkapp.com",
"offers": {
"@type": "Offer",
"price": "15",
"priceCurrency": "USD",
"description": "$15/month for 10,000 emails"
},
"aggregateRating": {
"@type": "AggregateRating",
"ratingValue": "4.8",
"ratingCount": "500",
"bestRating": "5",
"worstRating": "1"
}
}
]
/developer/integration/official-libraries/
[
{
"@context": "http://schema.org",
"@type": "Organization",
"url": "https://postmarkapp.com",
"logo": "https://postmarkapp.com/images/logo-stamp-social.png",
"name": "Postmark",
"founder": [
{
"@type": "Person",
"name": "Jason VandeBoom",
"jobTitle": "CEO"
}
],
"foundingLocation": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"location": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"sameAs": [
"https://twitter.com/postmarkapp"
]
},
{
"@context": "http://schema.org",
"@type": "WebSite",
"name": "Postmark",
"url": "https://postmarkapp.com"
}
]
/email-api/
[
{
"@context": "http://schema.org",
"@type": "Organization",
"url": "https://postmarkapp.com",
"logo": "https://postmarkapp.com/images/logo-stamp-social.png",
"name": "Postmark",
"founder": [
{
"@type": "Person",
"name": "Jason VandeBoom",
"jobTitle": "CEO"
}
],
"foundingLocation": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"location": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"sameAs": [
"https://twitter.com/postmarkapp"
]
},
{
"@context": "http://schema.org",
"@type": "WebSite",
"name": "Postmark",
"url": "https://postmarkapp.com"
},
{
"@context": "https://schema.org",
"@type": "SoftwareApplication",
"name": "Postmark",
"applicationCategory": "WebApplication",
"operatingSystem": "Web-based",
"description": "Postmark is a fast and reliable transactional email service that delivers your application's emails on time, every time. Send and track transactional emails with industry-leading deliverability.",
"url": "https://postmarkapp.com",
"offers": {
"@type": "Offer",
"price": "15",
"priceCurrency": "USD",
"description": "$15/month for 10,000 emails"
},
"aggregateRating": {
"@type": "AggregateRating",
"ratingValue": "4.8",
"ratingCount": "500",
"bestRating": "5",
"worstRating": "1"
}
}
]
/smtp-service/
[
{
"@context": "http://schema.org",
"@type": "Organization",
"url": "https://postmarkapp.com",
"logo": "https://postmarkapp.com/images/logo-stamp-social.png",
"name": "Postmark",
"founder": [
{
"@type": "Person",
"name": "Jason VandeBoom",
"jobTitle": "CEO"
}
],
"foundingLocation": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"location": {
"@type": "Place",
"address": {
"@type": "PostalAddress",
"streetAddress": "1 North Dearborn St, 5th Floor",
"addressLocality": "Chicago",
"addressRegion": "IL",
"postalCode": "60602",
"addressCountry": "US"
}
},
"sameAs": [
"https://twitter.com/postmarkapp"
]
},
{
"@context": "http://schema.org",
"@type": "WebSite",
"name": "Postmark",
"url": "https://postmarkapp.com"
},
{
"@context": "https://schema.org",
"@type": "SoftwareApplication",
"name": "Postmark",
"applicationCategory": "WebApplication",
"operatingSystem": "Web-based",
"description": "Postmark is a fast and reliable transactional email service that delivers your application's emails on time, every time. Send and track transactional emails with industry-leading deliverability.",
"url": "https://postmarkapp.com",
"offers": {
"@type": "Offer",
"price": "15",
"priceCurrency": "USD",
"description": "$15/month for 10,000 emails"
},
"aggregateRating": {
"@type": "AggregateRating",
"ratingValue": "4.8",
"ratingCount": "500",
"bestRating": "5",
"worstRating": "1"
}
}
]
🛡️ Trust Signals — external proof links that back the declared identity
| Page | Reviews | Proof links |
|---|---|---|
| / (home) | 12 | 0 |
| /developer/integration/official-libraries/ | 3 | 0 |
| /email-api/ | 12 | 0 |
| /smtp-service/ | 9 | 0 |
This page presents a snapshot of public data from Postmark, captured on May 24, 2026, to show how machine logic reads Identity & Authority signals into an AI reputation evaluation.
Purpose: This data is presented under “Fair Use” for the purpose of independent signal analysis, allowing readers to see the raw signals behind the reputation score.
Notice to Postmark: This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results are intended as professional feedback to help improve any website’s machine-readability and authority signals. The evaluation is free, and any company can request a fresh audit at any time.
Any company can use the insights for free and improve its voice. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://postmarkapp.com to view the most current version of its content and see directly what this company is about and what it offers.