1,680 companies use MailerSend, as of October 2026.
MailerSend: Transactional email. We've found 1,680 companies using MailerSend, most often in IT Services (20%) and Software (15%), typically with 11–50 employees and 18% based in United States.
Customers1,680companies use it
Most popular withE-learning4.4× more likely than average
Typical customer11–50employees · mostly United States
We've found 1,680 companies using MailerSend among the 312,502 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use MailerSend?
MailerSend customers are most often in IT Services (20%), Software (15%) and Marketing and Advertising (9%). The most common company size is 11–50 employees (71% of customers with a known size).
Which countries use MailerSend the most?
Most MailerSend customers we've found are in United States (18%), Brazil (13%) and United Kingdom (12%).
What are the alternatives to MailerSend?
The most used alternatives in the same category are SendGrid (105,400 companies), Amazon SES (39,035 companies), Mailgun (29,016 companies) and Mailchimp Transactional (28,530 companies).
How does runsonwhat know a company uses MailerSend?
We read public traces only. For MailerSend that means the company's email records (SPF, MX, DKIM), a subdomain that points at MailerSend and the company's published subprocessor list. Every match keeps the record it came from.
