# Warmup Inbox documentation

Research date: 2026-09-02

Documentation coverage: not-retrieved.

Reference index, not a mirror of complete vendor documentation. Retrieved pages do not prove the MCP works.

## What it does

Email warmup and deliverability platform running a network of 30,000+ real inboxes that exchange natural-looking email (opens, replies, stars) with a customer's connected accounts to build sender reputation.

## Access and connection

MCP support: none-found

Access requirements: free - the vendor states the API is "a free feature on every plan, with no extra charge."

Authentication: n/a for MCP. The REST API uses API-key authentication per the vendor's own docs (api.warmupinbox.com/api-doc, OpenAPI 3.0 spec).

Research checked: 2026-09-02

These details come from catalog research. Check vendor sources for current setup instructions; this is not proof of a tested connection.

## Sources

- https://www.warmupinbox.com/blog/product-updates/product-update-new-api/
- https://api.warmupinbox.com/api-doc
- https://documenter.getpostman.com/view/6493518/2s9YR3dFfb
- https://www.warmupinbox.com/

## Retrieved pages