Postmark: Transactional email. We've found 4,738 companies using Postmark, most often in Software (15%) and IT Services (13%), typically with 51–200 employees and 47% based in United States.
Customers4,738companies use it
Most popular withPackaging11× more likely than average
Typical customer51–200employees · mostly United States
We've found 4,738 companies using Postmark among the 179,208 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use Postmark?
Postmark customers are most often in Software (15%), IT Services (13%) and Financial Services (7%). The most common company size is 51–200 employees (49% of customers with a known size).
Which countries use Postmark the most?
Most Postmark customers we've found are in United States (47%), United Kingdom (11%) and Germany (7%).
What are the alternatives to Postmark?
The most used alternatives in the same category are SendGrid (63,197 companies), Amazon SES (23,032 companies), Mailchimp Transactional (19,138 companies) and Mailgun (14,701 companies).
How does runsonwhat know a company uses Postmark?
We read public traces only. For Postmark that means the company's email records (SPF, MX, DKIM), a subdomain that points at Postmark and the company's published subprocessor list. Every match keeps the record it came from.
IntercomSupport & Docs2.9×more likely
Atlassian StatuspageMonitoring2.3×more likely
StripePayments & Billing2.1×more likely
SlackCollaboration1.8×more likely
Amazon Trust ServicesSecurity & Compliance1.7×more likely
CursorDev Tools1.6×more likely
ZendeskSupport & Docs1.5×more likely
1PasswordSecurity & Compliance1.5×more likely
