# Email Validation API (inboxtrue.com)

Checks email addresses for syntax, MX records, mailbox existence, disposable domains and catch-all status in one API call.

- Atlas card: https://inite.ai/en/atlas/inboxtrue.com
- Site: https://inboxtrue.com
- For: Product and marketing teams checking email addresses at signup or across lists
- Use 0/100 · alive 100/100

## Used for

- Check individual email addresses on catch-all domains
- Validate email lists in bulk
- Add email verification to signup forms

## Price

- from 28.9 USD/month, free plan (read 2026-10-21 on https://inboxtrue.com/#pricing)

## For developers

- API docs: https://inboxtrue.com/docs
- MCP server: com.inboxtrue/inboxtrue (namespace; auth on 2026-10-21)
- Read 2026-10-21

## MCP server, measured daily

Server: https://api.inboxtrue.com/mcp, checked every day since 2026-10-21 (8 checks).

- Answered: 100% of daily checks
- Median first answer: 224 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-21

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Source: INITE Atlas, https://inite.ai/en/atlas/inboxtrue.com. JSON: https://inite.ai/api/atlas/inboxtrue.com. MCP: https://inite.ai/api/mcp (atlas_lookup).