What you can do
Welcome emails
Personalized welcome emails triggered the moment a user signs up, with onboarding steps and branding.
Password reset flows
Secure, branded password reset emails instead of the default Supabase template.
Order confirmations
Receipt emails after a purchase with order details, totals, and receipt number.
Newsletter signups
Collect emails and add subscribers to a mailing list using Resend Audiences.
Team invitation emails
Branded invite emails with a unique signup or join link when adding team members.
Before you connect
You need your API key from the Resend Dashboard.Create or copy your Resend API key
Resend works best paired with Supabase for linking emails to authenticated users. You can also route Supabase Auth emails through Resend’s SMTP for full branding control.
Connect Resend
- Web Browser
- Mobile App
You can connect from two places - both open the same popup.Option 1: From chatType a prompt that mentions Resend - for example, 

Option 2: From the Connectors tabClick the 

Click the Resend card, then click Connect.

After clicking ConnectA popup opens. Paste your API key, then click Save. A green dot appears next to Resend when the connection is active.

Update or disconnectGo to Connectors > Resend. Update your key or click Disconnect to remove the integration.

Connect Resend and send a welcome email when a user signs up. Rocket detects the intent and shows a Connect button inline. Click it and the popup opens.

... button in the preview toolbar, then select Connectors.







Example prompts
| Use case | Prompt |
|---|---|
| Welcome email | Send a welcome email through Resend when a new user signs up with Supabase. |
| Password reset | Route Supabase password reset emails through Resend with custom branding. |
| Order confirmation | After a Stripe payment, send a receipt email through Resend with the order total. |
| Newsletter signup | Add a newsletter form that saves emails to Supabase and adds them to my Resend Audience. |
| Team invite | Send an invitation email through Resend with a unique join link when I invite a team member. |
| Email verification | Send a verification email through Resend with a 6-digit code when a user registers. |
| Weekly digest | Send a weekly digest email every Monday with the user's activity summary from Supabase. |
| Abandoned cart | If a user adds items to cart but does not check out within 24 hours, send a reminder email through Resend. |
| Feedback request | Send a feedback request email through Resend 3 days after a user completes onboarding. |
| Custom HTML email | Create a styled HTML email template in Resend with our logo, brand colors, and a CTA button. |
Tips
- Supabase is recommended. Rocket links Resend emails to Supabase user accounts for the best experience. Most auth email flows (welcome, password reset) work best with Supabase connected.
- SMTP routing for auth emails. Route Supabase Auth emails through Resend for custom branding. See the Resend + Supabase SMTP guide.
- Resend Audiences for marketing. Resend supports newsletters and marketing emails through Audiences and Broadcasts, with built-in analytics and unsubscribe handling.
- API key security. Your key is encrypted at rest and never exposed in your project code. Always use the secure integration flow to connect.
- One Resend account per project. Each Rocket project connects to one Resend API key. Use different projects for different Resend accounts.
- Free plan sender limits. Free Resend accounts can only send from the default account email. To use a custom domain, upgrade your Resend plan, verify the domain, and update the
fromfield in your Supabase Edge Function.
What’s next?
Stripe
Send order confirmation and receipt emails after Stripe payments with Resend.
Supabase
Recommended for linking emails to authenticated users and routing auth emails through Resend.
SendGrid
An alternative email integration if you prefer SendGrid’s platform.
Build a SaaS app
Full recipe: Supabase + Stripe + Resend + Netlify to build a complete SaaS product.

