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Send product updates that stick

Keep users in the loop and coming back. Timely updates that reduce churn.

  1. 1
    Resend

    Sign up for Resend and verify your sending domain by adding the provided DNS records. Generate an API key in the dashboard. Install the Resend SDK with npm install resend. Test your setup by sending a simple text email to yourself using the SDK's send() method.

    Open Resend
  2. 2
    React Email

    Install React Email with npm install @react-email/components. Create an emails/ folder in your project and build a ProductUpdate.tsx template using components like Html, Heading, Text, Button, and Hr. Run npx email dev to preview the template in your browser before sending.

    Open React Email
  3. 3
    Supabase

    Write a Supabase query to select active users who have not received an update in the past 30 days. Create a Supabase Edge Function that runs on a cron schedule, fetches this user list, renders your React Email template for each recipient, and calls the Resend API to dispatch the emails in batches.

    Open Supabase

Estimated Monthly Cost

Verified Apr 2026
Resend

50,000 emails/mo included, $0.40 per additional 1K

$20/mo

Pro

Supabase

500 MB DB, 50K MAUs, 1 GB storage, 2 projects

Free

Free

1 tool free at this scale
Est. total$20/mo

Estimates based on publicly listed pricing. Actual costs may vary — always verify on each tool's pricing page.

Frequently asked questions

Costs depend on your scale. Most tools in this stack offer a free tier to start. Open the cost calculator on this page to estimate monthly cost based on your users and revenue.

This stack uses 3 tools: Resend, React Email, Supabase. Each tool is picked to work well with the others and to cover a specific part of the workflow.

Yes. The stack is a recommended starting point. You can replace any tool with an alternative you already use. Check the setup guide first to confirm the integration points you'll need to rebuild.

Most makers finish the 3-step setup in under an hour. Creating accounts and connecting the first integration takes the most time.

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