runsonwhat

Companies that use Mailtrap

190 companies use Mailtrap, as of October 2026.

Mailtrap: Email testing and sending. We've found 190 companies using Mailtrap, most often in IT Services (21%) and Software (11%), typically with 51–200 employees and 19% based in United States.

Customers190companies use it
Most popular withE-learning3.7× more likely than average
Typical customer51–200employees · mostly United States
  1. Handshakejoinhandshake.comSoftware · United States
    201–1,000 employeesSeen Oct 2026
  2. Arab Business Academyabacademyco.comFinancial Services · Iraq
    51–200 employeesSeen Oct 2026
  3. Abacus Dataabacusdata.caMarket Research · Canada
    1–10 employeesSeen Oct 2026
  4. Abcloudzabcloudz.comIT Services · United States
    201–1,000 employeesSeen Oct 2026
  5. Evoque Academiaacademiaevoque.com.brHealth, Wellness and Fitness · Brazil
    201–1,000 employeesSeen Oct 2026
  6. Ac&d Solutionsacdsolutions.itIT Services · San Marino
    11–50 employeesSeen Oct 2026
  7. Seen Oct 2026
  8. Adci - Art Directors Club Italianoadci.itMarketing and Advertising · Italy
    201–1,000 employeesSeen Oct 2026
  9. Advance Do Brasiladvancegp.com.brStaffing and Recruiting · Brazil
    5,001–10,000 employeesSeen Oct 2026
  10. Adwise.agencyadwise.agencyInternet · Ukraine
    51–200 employeesSeen Oct 2026
  11. Aegir Insights ApSaegirinsights.comSoftware As a Service · Denmark
    Seen Oct 2026
  12. Pkf Amit, Halfonahcpa.co.ilAccounting · Israel
    51–200 employeesSeen Oct 2026
  13. Ajila AGajila.comIT Services · Switzerland
    51–200 employeesSeen Oct 2026
  14. Aladdin Temp-Ritealaddintemprite.comHealthcare · United States
    51–200 employeesSeen Oct 2026
  15. Alcom LLCalcomusa.comConsumer Goods · United States
    1,001–5,000 employeesSeen Oct 2026
  16. Andromedaiandromed.aiInternet · Ireland
    11–50 employeesSeen Oct 2026
  17. AP Dialog AGapdialog.comCall Center · Switzerland
    Seen Oct 2026
  18. Apex Hostingapexminecrafthosting.comVideo Games · United States
    11–50 employeesSeen Oct 2026

Showing 40 of 202

Mailtrap customers also use

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

What kind of companies use Mailtrap

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

  • E-learning3% of customers3.7×more likely
  • Internet6% of customers1.8×more likely
  • Software10% of customers1.7×more likely
  • IT Services19% of customers1.5×more likely
  • Insurance3% of customers1.3×more likely
  • Financial Services7% of customers1.3×more likely

Industry

  1. IT Services21%
  2. Software11%
  3. Financial Services9%
  4. Internet6%
  5. Marketing and Advertising5%
  6. Education Management4%
  7. Healthcare4%
  8. E-learning4%

Company size

  1. 1–10 employees5%
  2. 11–50 employees14%
  3. 51–200 employees51%
  4. 201–1,000 employees21%
  5. 1,001–5,000 employees7%
  6. 5,001–10,000 employees1%
  7. 10,000+ employees1%

Country

  1. United States19%
  2. Brazil12%
  3. India9%
  4. Indonesia5%
  5. Nigeria5%
  6. Switzerland4%
  7. Netherlands4%
  8. Canada4%

Breakdowns cover the 174 customers with company details so far.

Alternatives to Mailtrap

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

Mailtrap FAQ

How many companies use Mailtrap?

We've found 190 companies using Mailtrap among the 188,945 we've scanned so far. We only count a company when a direct public record backs it up.

What kind of companies use Mailtrap?

Mailtrap customers are most often in IT Services (21%), Software (11%) and Financial Services (9%). The most common company size is 51–200 employees (51% of customers with a known size).

Which countries use Mailtrap the most?

Most Mailtrap customers we've found are in United States (19%), Brazil (12%) and India (9%).

What are the alternatives to Mailtrap?

The most used alternatives in the same category are SendGrid (66,682 companies), Amazon SES (24,009 companies), Mailchimp Transactional (20,040 companies) and Mailgun (15,593 companies).

How does runsonwhat know a company uses Mailtrap?

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