SMTP settings

Every setting below is read from the environment variable in the second column, or from the same key in a YAML configuration file. An unrecognised FANOUT_-prefixed variable is a startup error, so a renamed setting surfaces as a refusal to start rather than as a default nobody chose.

Setting	Environment variable	Type	Default
smtp.from	FANOUT_SMTP_FROM	string	—
smtp.host	FANOUT_SMTP_HOST	string	—
smtp.password	FANOUT_SMTP_PASSWORD	string · secret	—
smtp.port	FANOUT_SMTP_PORT	integer	587
smtp.username	FANOUT_SMTP_USERNAME	string	—

Secrets

Settings marked secret are redacted from Fanout’s startup configuration log. They are still plain environment variables: anything that can read the process environment can read them.