Some emails sent from Auth0 applications are marked as Spam.
This issue could be due to the Domain is blacklisted or Email provider issues.
- Check tenant logs for failed email by searching with
- Check Email provider settings
- Check headers with MX Toolbox: Email Header Analyzer, RFC822 Parser - MxToolbox (it could be blacklisted)
- If you use the Custom Email Provider, please contact the Email Provider Support team.
- If the domain is blacklisted, please reach out to Auth0 Support.