product · inferred from evidence
SPF
Sender Policy Framework, a DNS TXT record used for email domain authentication.
- SendGrid mail landing in spam: diagnose with auth, engagement, content
SendGrid mail is delivered but lands in spam. Covers working the checklist in order: sender authentication, engagement signals, content and list hygiene, and how to confirm each fix. Not for bounces, blocks, or mail that never arrives.
- Custom email provider and templates: SMTP setup, verification emails, liquid
Auth0's built-in email provider is for testing. Production needs your own provider before the first real user, plus templates that users actually recognize. Not the full reference manual.