runsonwhat

Companies that use Resend

24,428 companies use Resend, as of October 2026.

Resend: Email API for developers. We've found 24,428 companies using Resend, most often in B2B (13%) and Software (13%), typically with 1–10 employees and 42% based in United States.

Customers24,428companies use it
Most popular withB2B9.9× more likely than average
New customers+2started in the last 30 days
  1. Seen Oct 2026
  2. Seen Oct 2026
  3. Seen Oct 2026
  4. Seen Oct 2026
  5. Seen Oct 2026
  6. Seen Oct 2026
  7. Seen Oct 2026
  8. Seen Oct 2026
  9. Seen Oct 2026

Showing 40 of 24,428

Resend customers also use

How much more likely Resend customers are to use each tool than the average company.

What kind of companies use Resend

Segments where Resend customers are more common than among all the companies we track.

  • B2B7% of customers9.9×more likely
  • Web Design1% of customers8.9×more likely
  • Artificial Intelligence3% of customers8.3×more likely
  • Operations1% of customers8.2×more likely
  • Engineering, Product and Design4% of customers7.0×more likely
  • Consumer1% of customers7.0×more likely
  • Infrastructure2% of customers5.5×more likely
  • 1–10 employees49% of customers5.1×more likely

Industry

  1. B2B13%
  2. Software13%
  3. Engineering, Product and Design8%
  4. IT Services6%
  5. Artificial Intelligence5%
  6. Financial Services5%
  7. Infrastructure5%
  8. E-commerce4%

Company size

  1. 1–10 employees49%
  2. 11–50 employees32%
  3. 51–200 employees13%
  4. 201–1,000 employees4%
  5. 1,001–5,000 employees1%
  6. 5,001–10,000 employees0%
  7. 10,000+ employees0%

Country

  1. United States42%
  2. United Kingdom8%
  3. Brazil7%
  4. India6%
  5. France4%
  6. Germany4%
  7. Canada3%
  8. Australia3%

Breakdowns cover the 7,021 customers with company details so far.

Alternatives to Resend

Other tools in the same category, by how many companies use them.

Resend FAQ

How many companies use Resend?

We've found 24,428 companies using Resend among the 482,160 we've scanned so far. We only count a company when a direct public record backs it up.

What kind of companies use Resend?

Resend customers are most often in B2B (13%), Software (13%) and Engineering, Product and Design (8%). The most common company size is 1–10 employees (49% of customers with a known size).

Which countries use Resend the most?

Most Resend customers we've found are in United States (42%), United Kingdom (8%) and Brazil (7%).

What are the alternatives to Resend?

The most used alternatives in the same category are SendGrid (182,126 companies), Amazon SES (55,471 companies), Mailchimp Transactional (53,773 companies) and Mailgun (44,971 companies).

How does runsonwhat know a company uses Resend?

We read public traces only. For Resend that means the company's email records (SPF, MX, DKIM), a subdomain that points at Resend and the company's published subprocessor list. Every match keeps the record it came from.