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Resend Integration

Send beautiful emails with Resend

What is Resend?

Resend is a modern email service built for developers. It makes sending emails (like welcome emails, password resets, receipts) super simple and reliable.

Perfect for:

  • Welcome emails when users sign up
  • Password reset emails
  • Order confirmations
  • Notifications
  • Any transactional emails

What You'll Need

1

Resend Account

Create account at resend.com - free to start!

2

Verify Domain

Add your domain (or use their test email)

3

API Key

Get your API key

Step 1: Get Your Resend API Key

Create Account

  1. Go to resend.com
  2. Click Start Building
  3. Sign up with email or GitHub
  4. Verify your email

Get API Key

  1. Go to Dashboard
  2. Click API Keys
  3. Click Create API Key
  4. Give it a name (like "Production")
  5. Click Create
  6. Copy the key immediately! (You can't see it again)

Warning

**Save your API key now - **It's only shown once and you can't retrieve it later.

For Testing: Use Their Email

Note

For testing, you can send from onboarding@resend.dev - no domain setup needed! For production, you'll need to verify your own domain.

Step 2: Tell the Agent What You Want

Just describe what emails you need! Here are examples:

Example 1: Welcome Emails

I need to send welcome emails when users sign up.

Resend API key: [paste your key]

The email should:
- Say "Welcome!" with their name
- Have a button to go to the dashboard
- Look professional

Send from: noreply@yourdomain.com
(Or use onboarding@resend.dev for testing)

Please set this up.

Example 2: Password Reset

I need password reset emails.

Resend API key: [paste your key]

The email should:
- Have a "Reset Password" button
- Link expires in 1 hour
- Friendly message

Send from: noreply@yourdomain.com

Please build this.

Example 3: Order Confirmations

Send order confirmation emails after purchase.

Resend API key: [paste your key]

Include:
- Order number
- Items purchased
- Total price
- Estimated delivery
- "View Order" button

Send from: orders@yourdomain.com

Please set this up.

Tip

**That's all you need - **The agent will create the emails and set up everything.

Step 3: Test Your Emails

After the agent sets it up:

1

Click Preview

In Emergent, click Preview

2

Trigger an Email

Do whatever sends the email (like sign up)

3

Check Your Inbox

You should receive the email!

4

Test the Links

Click any buttons/links to make sure they work

5

Check It Looks Good

Make sure it looks professional

Step 4: Go Live with Your Domain

For production, verify your domain:

1

Go to Domains

In Resend Dashboard → Domains

2

Add Domain

Click Add Domain

Enter your domain (like yourdomain.com)

3

Add DNS Records

Copy the DNS records Resend gives you

Add them to your domain provider (like GoDaddy, Namecheap)

4

Verify

Click Verify in Resend

May take up to 48 hours

5

Update Your App

Tell the agent:

Change the email sender to noreply@yourdomain.com
(now that my domain is verified)

Common Questions

</Accordion> ## Something Not Working?

Emails Not Sending

Tell the agent:

Emails aren't sending. I see this error:
[paste the error]

Can you fix it?

Wrong Sender Email

Tell the agent:

Emails show wrong sender address.
Should be: noreply@mysite.com
Please update it.

Email Looks Broken

Tell the agent:

The email doesn't look right on mobile.
Can you make it responsive?

Real Examples

Example 1: Complete Auth Emails

I need all authentication emails:

1. Welcome email (when they sign up)
2. Email verification (with link to verify)
3. Password reset (with reset link)
4. Password changed confirmation

Resend API key: [paste key]
Send from: noreply@myapp.com

Make them all professional and friendly.

Please set these up.

Example 2: E-commerce Emails

I need order-related emails:

1. Order confirmation (with order details)
2. Shipping notification (with tracking link)
3. Delivery confirmation

Include:
- Order items and prices
- Customer name
- Order number
- Nice buttons

Resend API key: [paste key]

Please build this.

Quick Checklist

Before going live:

  • Tested all email types
  • Emails arrive in inbox (not spam)
  • All links work
  • Looks good on mobile
  • Domain is verified (for production)
  • Changed from test email to your domain

Remember

Use test email for development - onboarding@resend.dev

Verify your domain for production - Required for real emails

Free tier is great - 100 emails/day

Test everything - Check emails before launch

Info

Stuck? Tell the agent: "I need help with my Resend emails" and describe the issue.

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