Question

Magic link email lands in spam for every new user

Solved · 179 viewsasked 2 weeks ago by

sam_builds

Supabase's default sender. Gmail puts it in spam, Outlook rejects it.

What I’ve tried

Changed the subject line. Searched here and in the docs, found nothing that matched my case.

Comment

2 answers

Marked as helpful by the asker

jonas_k2 weeks ago

The default sender is shared by thousands of projects and has the reputation to match. Configure custom SMTP in Supabase (Resend, Postmark) on your own domain with SPF and DKIM set up. Takes an hour, fixes it permanently. The subject line is not the problem.

Comment

Custom SMTP with SPF and DKIM on the salon domain. Test logins land in the Gmail inbox now.

sam_builds 2 weeks ago

arjun_codes2 weeks ago

Add a DMARC record next to SPF and DKIM. Gmail and Yahoo expect one from bulk senders, and missing DMARC is a common reason mail still lands in spam with perfect SPF and DKIM. Start relaxed:

_dmarc.example.com  TXT  "v=DMARC1; p=none; rua=mailto:dmarc@example.com"

and tighten to p=quarantine once the reports look clean.

Comment

Added DMARC with p=none. Will check the reports in a few weeks.

sam_builds 2 weeks ago

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Magic link email lands in spam for every new user

What I’ve tried

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Magic link email lands in spam for every new user

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