What powers postmarkapp.com?
Last seen Jun 2026 · 55 technologies across 26 categories
Advertising
Amazon Advertising
since Feb 2025
Microsoft Advertising
since Jan 2025
Reddit Ads
since Nov 2024
Twitter Ads
since May 2022
Affiliate programs
Rewardful
since May 2024
Analytics
BugSnag
since Jun 2018
Fathom
since Sep 2022
Google Analytics
since Jun 2018
Hotjar
since Mar 2022
Linkedin Insight Tag
since Nov 2023
Microsoft Clarity
since Feb 2023
Snowplow Analytics
since May 2021
Authentication
Facebook Login
since May 2022
Google Sign-in
since May 2022
Caching
Varnish
since May 2022
CDN
Amazon CloudFront
since Aug 2018
Amazon S3
since Aug 2018
cdnjs
since Nov 2021
Cloudflare
since Nov 2021
Google Hosted Libraries
since May 2022
Cookie compliance
OneTrust
since Apr 2026
Ecommerce
Amazon Webstore
since Feb 2025
Font scripts
Cufon
since Aug 2018
Issue trackers
Zendesk
since Feb 2025
JavaScript libraries
Load balancers
Amazon ELB
since May 2023
Miscellaneous
HTTP/3
since Jan 2026
Open Graph
since Sep 2022
Popper
since Apr 2023
Prism
since Jun 2018
Webpack
since Aug 2018
PaaS
Amazon Web Services
since Jul 2020
Payment processors
Performance
Priority Hints
since Apr 2026
Programming languages
Reverse proxies
Nginx
since Aug 2018
RUM
New Relic
since Aug 2018
Security
Tag managers
Google Tag Manager
since Apr 2018
UI frameworks
Tailwind CSS
since Apr 2022
Web frameworks
Ruby on Rails
since Aug 2018
Web servers
Cowboy
since Apr 2023
Webmail
Google Workspace
since Aug 2022
Widgets
Forethought Solve
since Jun 2025
Twitter
since Aug 2018
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| suppressions | #11 | 1,000 |
| email services | #20 | 200 |
| postmark pricing | #1 | 120 |
| isp block | #1 | 120 |
| emails are going to spam | #2 | 120 |
| geronimo | #95 | 120 |
| transactional emails | #1 | 110 |
| why are my emails going to spam | #3 | 97 |
| tcp port 587 | #5 | 89 |
| poshmark login | #19 | 89 |
| postmarked | #5 | 85 |
| postmark email | #1 | 79 |
| smtp | #17 | 78 |
| postmark us | #2 | 63 |
| emails going to spam | #2 | 59 |
| define indie | #96 | 57 |
| why mail going to spam | #1 | 52 |
| dmarc digests | #2 | 52 |
| transactional email | #4 | 50 |
| minecraft free trial | #72 | 47 |
| email template | #15 | 47 |
| why does email go to spam | #2 | 42 |
| what is dkim record | #2 | 42 |
| beforward | #35 | 38 |
| bimi email | #3 | 38 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 98% desktop
- 2% phone
New Zealand
Denmark
United States
India
Germany
United Kingdom
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
8.00 / 10 · ranked #7,481 of all domains
2,006 referring domains · OpenPageRank
Search traffic
5,800 est. monthly organic visits (US)
4,933 keywords in Google's top 30
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.4 MB · 73 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| signatures.postmarkapp.com | 30 |
| account.postmarkapp.com | 29 |
| postmarkapp.com | 19 |
| dmarc.postmarkapp.com | 18 |
| www.postmarkapp.com | 18 |
| spamcheck.postmarkapp.com | 17 |
| status.postmarkapp.com | 13 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Amazon Advertising Jun 2026
- detected Amazon Webstore Jun 2026
- detected Microsoft Advertising Jun 2026
- detected Reddit Ads Jun 2026
- detected Rewardful Jun 2026
- dropped Amazon Advertising May 2026
- dropped Amazon Webstore May 2026
- dropped Apache HTTP Server May 2026
- dropped Craft CMS May 2026
- dropped Handlebars May 2026
- dropped HubSpot May 2026
- dropped Matomo Analytics May 2026
- dropped Microsoft Advertising May 2026
- dropped PHP May 2026
- dropped React May 2026
- dropped Reddit Ads May 2026
- dropped Rewardful May 2026
- dropped Typekit May 2026
- dropped Yii May 2026
- detected OneTrust Apr 2026
- detected Priority Hints Apr 2026
- detected Tailwind CSS Apr 2026
- dropped Kong Feb 2026
- detected HTTP/3 Jan 2026
- dropped Sentry Jan 2026