Resend

Send from your own domain via the Resend API.

All plans Server-side

How it works

Your Resend API key and an optional verified From address are stored encrypted as a single credential.

knit.bio uses them to send Broadcasts (Audience → Broadcast), emails from the Submissions page, and the welcome auto-responder. Anyone on your Unsubscribed list is skipped automatically. Add a From address to send from your own domain; leave it blank to send from Resend’s shared onboarding@resend.dev sandbox.

How it flows

Add API key (+ From, optional)
Validated & stored
You send / signup fires
Email delivered

Set it up

  1. 1

    Create an API key

    At resend.com, create an API key. Verify a sending domain if you want to send from your own address.

    resend.com/api-keys
  2. 2

    Connect

    In Settings → Integrations → Resend, paste the key, optionally enter a From address on your verified domain, and connect.

Configure in Settings

Official resources

Tips to get the most out of it

  • Send from you@yourdomain.com for better deliverability and brand trust than a generic sender.
  • Pair with the Welcome email so every signup gets an instant, on-brand reply.