rembSending 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:
1supabase 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:
1const RESEND_API_KEY = Deno.env.get('RESEND_API_KEY')23const handler = async (_request: Request): Promise<Response> => {4 const res = await fetch('https://api.resend.com/emails', {5 method: 'POST',6 headers: {7 'Content-Type': 'application/json',8 Authorization: `Bearer ${RESEND_API_KEY}`,9 },10 body: JSON.stringify({11 from: 'onboarding@resend.dev',12 to: 'delivered@resend.dev',13 subject: 'hello world',14 html: '<strong>it works!</strong>',15 }),16 })1718 const data = await res.json()1920 return new Response(JSON.stringify(data), {21 status: 200,22 headers: {23 'Content-Type': 'application/json',24 },25 })26}2728Deno.serve(handler)
3. Deploy and send email#
Run function locally:
1supabase start2supabase functions serve --no-verify-jwt --env-file .env
Test it: http://localhost:54321/functions/v1/resend
Deploy function to Supabase:
1supabase functions deploy resend --no-verify-jwt
When you deploy to Supabase, make sure that your RESEND_API_KEY is set in Edge Function Secrets Management
Open the endpoint URL to send an email:
4. Try it yourself#
Find the complete example on GitHub.