# Sergiy Korolov (slim)

> Sergiy Korolov is CEO and co-founder. Mailtrap Email API + MCP on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/sergiy-korolov/index.md (~750 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/people/sergiy-korolov/index.json · canonical https://www.anchorterminal.com/people/sergiy-korolov/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-27
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

CEO and co-founder.

Sergiy Korolov is managing partner at Railsware, the product studio behind Mailtrap, Coupler.io and TitanApps.

- LinkedIn: https://www.linkedin.com/in/sergiykorolov

## What Sergiy builds

- [Mailtrap Email API + MCP](https://www.anchorterminal.com/tools/mailtrap.md), graded B, 66.9/100, in Email delivery APIs. Email platform from Railsware Products Studio LLC for transactional and bulk sending, inbound mail, templates, contacts and sandbox testing. Agents reach it through a REST API, SMTP, SDKs, a CLI and a local MCP server. CEO and co-founder, researched 2026-10-27.

## Questions

### Who is Sergiy Korolov?

Sergiy Korolov is managing partner at Railsware, the product studio behind Mailtrap, Coupler.io and TitanApps.

### What does Mailtrap (Railsware) make?

Anchor Terminal lists Mailtrap Email API + MCP from Mailtrap (Railsware).

### How are Sergiy's tools graded?

Mailtrap Email API + MCP is graded B, 66.9 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.linkedin.com/in/sergiykorolov/details/experience/
- https://mailtrap.io/about-us/
- https://www.linkedin.com/in/sergiykorolov
- https://mailtrap.io/
- https://mailtrap.io
- https://docs.mailtrap.io/

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched.