Sending Emails
Sending emails from Edge Functions using the Resend API.
Prerequisites#
To get the most out of this guide, you’ll need to:
Make sure you have the latest version of the Supabase CLI installed.
1. Create Supabase function#
Create a new function locally:
_10supabase functions new resend
Store the RESEND_API_KEY in your .env file.
2. Edit the handler function#
Paste the following code into the index.ts file:
_28const RESEND_API_KEY = Deno.env.get('RESEND_API_KEY')_28_28const handler = async (_request: Request): Promise<Response> => {_28 const res = await fetch('https://api.resend.com/emails', {_28 method: 'POST',_28 headers: {_28 'Content-Type': 'application/json',_28 Authorization: `Bearer ${RESEND_API_KEY}`,_28 },_28 body: JSON.stringify({_28 from: 'onboarding@resend.dev',_28 to: 'delivered@resend.dev',_28 subject: 'hello world',_28 html: '<strong>it works!</strong>',_28 }),_28 })_28_28 const data = await res.json()_28_28 return new Response(JSON.stringify(data), {_28 status: 200,_28 headers: {_28 'Content-Type': 'application/json',_28 },_28 })_28}_28_28Deno.serve(handler)
3. Deploy and send email#
Run function locally:
_10supabase start_10supabase functions serve --no-verify-jwt --env-file .env
Test it: http://localhost:54321/functions/v1/resend
Deploy function to Supabase:
_10supabase functions deploy resend --no-verify-jwt
Open the endpoint URL to send an email:
4. Try it yourself#
Find the complete example on GitHub.