Field guide

Understand the step.
Then change it.

Three practical guides for one small launch job. Read the native sources, check the boundary and choose what to do next.

Supabase auth email not sending? Find the failed stage first.

A practical decision tree for distinguishing Supabase Auth errors, SMTP handoff, provider events and mailbox receipt.

Prepare owner access, preserve existing DNS, use native integration and verify one auth-email path without collecting secrets.

Define a complete Supabase auth-email test: one action, intended destination, mailbox observation and a useful acceptance record.