# SMTPfast (smtpfa.st)

Sends transactional email over a REST API or SMTP bridge and traces each send, bounce, open and webhook event per email.

- Atlas card: https://inite.ai/en/atlas/smtpfa.st
- Site: https://smtpfa.st
- For: Developers sending transactional email, such as receipts and password resets, through an API
- Categories: dev
- Use 0/100 · alive 100/100

## Used for

- Send transactional email with one HTTP API call
- Trace each email from send to delivery and open
- Read bounce reasons from the receiving server

## Price

- from 9 USD/month, free plan (read 2026-10-18 on https://smtpfa.st/pricing)

## For developers

- API docs: https://smtpfa.st/docs
- MCP server: st.smtpfa/smtpfast (namespace; auth on 2026-10-18)
- Status page: https://smtpfa.st/status
- Read 2026-10-18

## MCP server, measured daily

Server: https://smtpfa.st/api/mcp, checked every day since 2026-10-19 (3 checks).

- Answered: measuring, 3 daily checks so far
- Median first answer: 454 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-18

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