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IntegrationsPayload CMSDataFast Analytics IntegrationGoogle Analytics IntegrationGoogle Tag Manager IntegrationPostHogStatSig IntegrationUmami Analytics IntegrationAuth.js IntegrationBetter AuthClerkStack Auth IntegrationSupabase Authentication IntegrationBuilder.io IntegrationPayload CMS IntegrationAWS S3 IntegrationResend Email IntegrationUpstash Redis IntegrationVercel Blob IntegrationLemon SqueezyPolarStripe

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Email

Resend for transactional email. Also powers magic link authentication.

RESEND_API_KEY=re_...
RESEND_AUDIENCE_ID=...  # optional, for audience/list management

What It Does

  • Transactional email (welcome, receipts, notifications)
  • Magic link sign-in (when AUTH_RESEND_ENABLED — dev only by default)
  • Audience management for marketing lists

Magic Link Auth

Set RESEND_API_KEY and the auth system picks it up automatically. Note: Resend-based auth is development-only by default to prevent accidental email abuse in production. See Authentication for details.

Domain Setup

  1. Add your domain in Resend Dashboard → Domains
  2. Add the DNS records (DKIM + SPF)
  3. Verify ownership

Without a verified domain, emails send from Resend's shared domain (fine for dev).

Key Files

FilePurpose
src/server/services/resend-service.tsEmail sending logic
src/server/actions/resend-actions.tsServer actions for email
src/config/features-config.tsAUTH_RESEND_ENABLED flag