v0 Email: Send Notifications by Describing What You Want

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How do I add email to my v0 app?

v0 turned your prompt into a production-ready app. Dreamlit does the same thing for email: describe what you want, and it generates the complete workflow. The two tools complement each other naturally. v0 generates your frontend and API routes. Dreamlit securely connects to your database (through the Vercel Marketplace) and handles notifications separately:

• Lead captured → welcome sequence
• Purchase completed → receipt sent
• Feedback submitted → thank you email

No API calls between them, no shared code, no deployment coupling.

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Who is this guide for?

• v0 builders who need transactional email without the infrastructure detour
• Vercel users who want notifications that work across edge, serverless, and any runtime
• Anyone using v0 with Supabase or Neon looking for professional, on-brand emails

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Why use Dreamlit instead of building email in v0?

You could prompt v0 to wire up Resend or SendGrid. It’ll generate the integration. But then:

1. How do you preview that email with real user data before it goes out?
2. How do you track who opened it? Who clicked?
3. What happens when emails bounce?
4. Are you setting up DKIM and SPF records for deliverability?
5. What about retry logic when the provider has an outage?
6. What about scheduled emails? Recurring digests? Drip sequences?
7. After you’ve built a few workflows, how do you see how they’re all performing in one place?
8. How do you let teammates edit email copy without touching code?

Or just use Dreamlit and skip all of that. We handle it end-to-end.

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What do I need before starting?

• A v0 app with a database integration (Supabase, Neon, or another Postgres provider)
• 5 minutes

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Does my v0 project have a database?

Dreamlit securely connects to your database and uses changes as triggers for emails. v0 supports several database integrations through the Vercel Marketplace.

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Supported databases

v0 offers built-in integrations for:

• Supabase: Full Postgres database with auth, realtime, and more
• Neon: Serverless Postgres with instant provisioning
• Other Postgres providers: Any Postgres database you’ve connected manually

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How do I check my database setup?

1. Open your v0 project
2. Go to Project Settings → Integrations
3. Look for Supabase, Neon, or another database integration

If you don’t see a database integration, you can add one directly from v0’s chat or project settings.

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How do I add a database to my v0 project?

If your project doesn’t have a database yet:

1. In v0’s chat, prompt: “Add a Supabase database to this project” (or Neon)
2. Click Add when v0 suggests the integration
3. Follow the setup wizard to connect through the Vercel Marketplace

v0 will provision the database and make it available to your app automatically.

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How do I connect Dreamlit to my database?

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How do I create my first email workflow?

Here’s an example: setting up a welcome email that sends when someone signs up. You can use this pattern for any workflow where you record data in your database.

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Step 1: Create the workflow in Dreamlit

Click Create Workflow and describe what you want:

“Send a welcome email when a new user signs up”

The AI generates everything: the database trigger, email template, and copy.

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Step 2: Update your v0 app (if needed)

Here’s the key insight: Dreamlit securely connects to your database and reacts to changes, not your code. When a new row appears in your users or auth.users table, Dreamlit sends the email automatically. If your v0 app already creates user records on signup, you’re done. No code changes needed. If you need to add a field or table for Dreamlit to use as a trigger, prompt v0:

“When a user signs up, add a row to the user_signups table with their email and name”

Or for something like order confirmations:

“When a user completes checkout, insert a row into the orders table with the order details”

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Step 3: Preview and publish

Preview your email with real data from your database, then click Publish.

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How does v0 work with Dreamlit?

Dreamlit triggers emails based on database changes. When prompting v0, focus on getting data into your database. Dreamlit handles the rest. Good prompts for v0: You don’t need to prompt v0 about emails at all. Just make sure the data lands in your database, and Dreamlit takes it from there.

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What other workflows can I build?

Any workflow that triggers on a database change. Check out our use cases for example prompts across welcome emails, order confirmations, reminders, internal alerts, and more.

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How do I send from my own domain?

By default, emails send from Dreamlit’s domain. To send from your own domain (like hello@yourapp.com), set up a custom email domain in minutes. This improves deliverability and looks more professional to your users. Full domain setup guide →

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FAQ

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What if my v0 project doesn’t have a database?

You can add one directly from v0. In the chat, prompt: “Add a Supabase database to this project” (or Neon). v0 will walk you through the Vercel Marketplace setup.

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Which database should I choose: Supabase or Neon?

We recommend Supabase. It connects to Dreamlit in two clicks via OAuth, and includes auth, realtime, and other features you’ll likely need. Neon works too if you already have it set up.

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Why aren’t my emails sending?

A few things to check:

1. Is your workflow published? Saved workflows don’t run until you click Publish.
2. Is the trigger table correct? v0 might have named tables differently than you prompted. Check your database to see the actual table names.
3. Is data being written? Check your database dashboard to confirm rows are being created.
4. Try the preview. Use the preview to test with sample data and verify the workflow runs.

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Do I need to change my v0 app code?

Usually no. Dreamlit reacts to database changes, so if your app already writes the data you need, you’re all set. If you need to track something new (like order completions), just prompt v0 to add the database write.

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Will my emails work on Vercel’s edge functions?

Yes. Dreamlit doesn’t run inside your app. It connects directly to your database. Deploy to Vercel’s edge, serverless, or any other runtime. Your email workflows keep running.

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Can I send Slack notifications too?

Yes. Dreamlit supports Slack alongside email. Just describe what you want: “Notify our team on Slack when a new order comes in.” Learn more about Slack →

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How do I test without emailing real users?

Use the preview feature to send test emails to yourself with real data from your database. Your workflow won’t email actual users until you publish it.

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What if I’m already using Resend, SendGrid, or another email provider?

Dreamlit works alongside traditional email providers. Since Dreamlit takes a fundamentally different approach (database-driven, AI-generated workflows), you don’t need to migrate off your existing setup. Try Dreamlit for your next workflow and keep using your current provider for everything else.

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Next steps

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References

• v0
• Vercel Marketplace
• Dreamlit Supabase integration
• Dreamlit Postgres setup guide
• Supabase Auth SMTP docs
• Dreamlit use cases

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Last validated: 2026-04-12