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v0 + Dreamlit

v0 turned your idea into a production-ready app. Now you need to send emails: welcome messages, order confirmations, password resets. You could prompt v0 to add email… but should you? Dreamlit keeps you in the same AI-first workflow. Describe the email you want, and it builds everything: the trigger, the template, the sending logic. How it works: Dreamlit watches your database directly. Your app never calls an API.
  • Lead captured → welcome sequence
  • Purchase completed → receipt sent
  • Feedback submitted → thank you email
Your v0 app writes data. Dreamlit sends the email.

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Who this guide is for

  • v0 builders who need transactional email without the setup
  • Vibe coders who want to ship notifications as fast as they ship features
  • Anyone using v0 with a database looking for professional, on-brand emails

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Why can’t I just ask v0 to build email?

You could. Prompt v0 to send a welcome email when someone signs up. It’ll wire up Resend or SendGrid. 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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Prerequisites

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

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Does your v0 project have a database?

Dreamlit connects to your database to watch for changes and trigger 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
If you’re starting a new v0 project and plan to use Dreamlit, we recommend Supabase for the easiest setup. Just two clicks to connect.

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How to check your 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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Adding a database to your 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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Connect Dreamlit to your database

If your v0 app uses Supabase, connecting is two clicks:
1

Create a Dreamlit account

Go to app.dreamlit.ai and sign up.
2

Connect via OAuth

Click Connect Supabase and authorize the connection. Dreamlit securely connects to your Supabase project.
Connecting Supabase via OAuth
That’s it. 2 clicks and you’re connected.
Need auth emails? (password reset, magic links, email verification) Check out our Supabase Auth Emails guide for one-click setup.

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Example: Welcome email workflow

Let’s walk through creating 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.
AI generating a welcome email workflow

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Step 2: Update your v0 app (if needed)

Here’s the key insight: Dreamlit watches your database, not your code. When a new row appears in your users or auth.users table, Dreamlit sends the email automatically.
If you’re using Supabase Auth, users are automatically added to the auth.users table when they sign up. No extra table needed.
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 watch, 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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Prompting v0 to 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 want…Prompt v0 with…
Welcome emails”Store new signups in a user_signups table”
Order confirmations”Insert order details into orders when checkout completes”
Comment notifications”Save comments to a comments table with the post_id and author”
Activity alerts”Log user actions to an activity table”
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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More workflow ideas

Looking for inspiration? Check out our use cases for example prompts across welcome emails, order confirmations, reminders, internal alerts, and more.

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Send from your own domain

By default, emails send from Dreamlit’s domain. To send from your own domain (like [email protected]), you can set up a custom email domain in minutes.
1

Add your domain

Go to Settings → Email Domains and click Add domain. Enter your domain (we recommend a subdomain like mail.yourapp.com).
2

Verify automatically

Dreamlit can automatically configure your DNS records for you. Just click Verify with your DNS provider, sign in to your provider, and authorize the changes.
Automated DNS verification flow
If your DNS provider isn’t supported for automatic setup, you can add the records manually. Dreamlit shows you exactly what to add.
3

Start sending

Once verified, select your domain when creating email workflows. Your emails will now come from your own brand.
This improves deliverability and looks more professional to your users. Full domain setup guide →

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FAQ

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.
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.
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.
Usually no. Dreamlit watches your database for 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.
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.
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 →
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.
Dreamlit works alongside traditional email providers. Since we take 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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You’re all set

Describe what you want. Dreamlit builds it. Now go ship your next workflow.

Supabase Auth emails

Set up password reset, magic links, and more

Email domain setup

Send from your own domain

Use cases

More workflow examples

Get support

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