# What does Postmark use?

Postmark (postmark-usa.com) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-11-11).

- Industry: Consumer Goods
- Size: 51–200 employees
- Based in: Wabash, United States
- Founded: 1971
- LinkedIn: https://www.linkedin.com/company/postmark-incorporated

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Brevo](https://www.runsonwhat.com/reverse/brevo) | Marketing | DNS verification records |  |
| [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records, Website code |  |
| [Squarespace](https://www.runsonwhat.com/reverse/squarespace) | Website & CMS | Custom domain, DNS records, Website code |  |
| [Lead Forensics](https://www.runsonwhat.com/reverse/lead-forensics) | Sales & CRM | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records, Website code |  |

## FAQ

### What tools does Postmark use?

As of November 2026, runsonwhat has found 14 tools at Postmark (postmark-usa.com) in public records. Edge & Hosting: Cloudflare. Application: jQuery, Google Fonts and YouTube. Data & Observability: Google Analytics and Sentry. Go-to-market: Google Ads, Brevo and Zendesk. Company Ops: Microsoft 365. Last checked November 11, 2026.

### What sales tools does Postmark use?

The sales tools runsonwhat has found at Postmark are Lead Forensics (November 2026); no CRM shows up in Postmark's public records. runsonwhat found Lead Forensics through Lead Forensics code on postmark-usa.com. Lead Forensics is used by 1,474 companies runsonwhat tracks.

### What email provider does Postmark use?

Postmark uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 737,885 companies runsonwhat tracks.

### What does Postmark use for customer support?

Postmark uses Zendesk for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on postmark-usa.com. Zendesk is used by 43,847 companies runsonwhat tracks.

### What analytics tools does Postmark use?

Postmark uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on postmark-usa.com. Google Analytics is used by 904,465 companies runsonwhat tracks.

### What is Postmark's website built with?

Postmark uses Squarespace for its website, according to runsonwhat (November 2026). runsonwhat found Squarespace through a subdomain that points at Squarespace and DNS records. Squarespace is used by 34,646 companies runsonwhat tracks.

### Does Postmark use jQuery?

Yes. runsonwhat found jQuery at Postmark through jQuery code on postmark-usa.com. jQuery is a Frontend tool used by 927,393 companies runsonwhat tracks.

### Which companies have a tech stack similar to Postmark's?

The companies with the stacks most like Postmark's are Flory Industries, SJG International, Allied Filter Systems and Farsley Transport, according to runsonwhat (November 2026). Each shares 6 to 8 tools with Postmark, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Postmark uses?

runsonwhat reads public records only. Of the 14 tools at Postmark, 9 were found through code on postmark-usa.com, 3 through DNS records, 1 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and postmark-usa.com about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/postmark-usa.com (updated November 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.