SPF / DKIM / DMARC
The three proof-of-sender checks: the allowed list, the signature, and the rule for failures
Words that go with it
- APIA way for one program to ask another to do something
- API callOne request from your website to a service like Resend
- BounceAn email that couldn't be delivered, for example because the address doesn't exist
- DeliverabilityHow likely your emails are to land in the inbox, not spam
- Email authenticationPublic records that prove who's allowed to send for a domain
- Email serviceA company that delivers emails for websites (Resend, in this course)
- Sender reputationAn inbox provider's memory of whether a sender's emails are wanted
- Test sender[email protected]: works straight away, but only delivers to your own Resend email
- Transactional emailAn automatic email a website sends because something happened, like an order