API keys

One test key and one live key are issued automatically when your account is created. Rotating a key revokes the old one and issues a new one of the same mode; the raw value is only ever shown once.

Create a key

Pick an environment to mirror your own dev/staging/prod pipeline. Only a production key can send real mail; every other environment behaves exactly like a test key.

LabelModePrefixStatusActions
Local devtestenv_test_00000000...Active
Productionliveenv_live_00000000...Active