# Set the Resend API key (email)

`RESEND_API_KEY` enables the email tool so agents can send mail through Resend.

## Set it

Press **⌘K**, type `resend` or `email`, choose **Set Resend API key**, paste the key (`re_…`), Save.

Optionally also set `RESEND_FROM_EMAIL` (the verified sender address) the same way — search `resend from`.

## Governance

Email is a write tool, so it stays governed:

- The destination is checked against the per-tool **allowlist** (`tool_allowlists`).
- Sends pass through the trust-mode gate — risky sends create an approval request unless trust mode is `auto` and the risk tier permits it.

## Verify

**Settings → Connectors** shows the email connector as **ready** once the key is present.

## Related

- [Set an API key](/help/set-api-key)
