v0 by Vercel is a platform for building web sites, tools, apps, and projects via chat. You can add Resend in a v0 project by asking the chat to add email sending with Resend.

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1. Add your Resend API key

To use Resend with v0, you’ll need to add a Resend API key, which you can create in the Resend Dashboard.
Do not share your API key with others or expose it in the browser or other client-side code.
adding the Resend integration to a v0 chat

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2. Add a custom domain to your Resend account

By default, you can only send emails to your own email address. To send emails to other email addresses:
  1. Add a custom domain to your Resend account.
  2. Add the custom domain to the from field in the resend function in v0 (or ask the chat to update these fields).
Get more help adding a custom domain in Resend’s documentation.