4 Email Flows Your Lovable App Needs Before Going Live

Your Lovable app can do a lot. But if your users aren't getting emails from you, you're missing out. Email is how you confirm signups, bring users back, and grow revenue.

The catch? "Email" isn't one thing. It's four distinct types, each with its own setup and configuration. Miss any one and you're leaving engagement on the table.

The four types of emails your Lovable app needs

1. User authentication and account management emails

Also known as "auth emails", these are required for any app with a login/signup flow. They include:

• Magic login links
• Password reset requests
• Signup confirmation ("Verify your email address")
• Email change verification

2. Transactional emails

These are real-time notifications that bring users back to your app and keep them informed of app activity. Examples include:

• Welcome email flow to new signups, with a follow-up feedback request after a few days
• Invitation emails
• Comment notifications ("Someone replied to your post")
• Order confirmations and receipts
• Status updates ("Your export is ready")

3. Email blasts

Also known as "broadcasts", email blasts are one-time emails sent to a specific group of recipients, typically for marketing or engagement purposes. Examples include:

• Newsletters
• Announcements
• Feature highlights / product updates (new features, updates, etc.)
• Special offers and promotions

4. Recurring emails

Recurring emails are messages sent to users on a regular schedule. Examples include:

• Reminder emails
• Usage alerts
• Monthly subscription updates
• Weekly digests or summaries

But that's not all...

Sending emails is only one part of the puzzle. You'll also want processes in place to observe, analyze, and optimize your email performance:

• Preview before sending: Tweak messaging and design before it reaches real users
• Track engagement: Monitor open rates, click rates, and overall performance
• Monitor deliverability: Watch bounce rates and complaints to stay out of spam folders
• Verify delivery: Confirm emails are actually going out and handle failures gracefully

What to watch out for when picking an email provider

You have three main options for setting up email in your Lovable app. Each comes with trade-offs.

Option 1: Use Lovable Cloud's Custom Emails

Lovable Cloud recently added Custom Emails in the Cloud settings. You set up your email sender once through a guided flow, and Lovable handles the secrets and API keys on your behalf.

Lovable Cloud's email functionality doesn't support email blasts or recurring emails.[1] You'll need a separate service for those.

Option 2: Use Resend

Resend is one of the default email services Lovable suggests. Loved by developers, it offers a simple API to trigger emails from your app code and backend. It's up to you (via Lovable prompting) to configure everything else, from triggering logic to engagement tracking.

For email blasts, you'll typically work with Resend's Audiences and Broadcasts. For recurring emails, you still need to handle the syncing and scheduling logic yourself.[2][3]

Option 3: Use an end-to-end email solution like Dreamlit

Dreamlit is a fully managed email solution built for vibe coders. It lets you visualize your email workflows end-to-end and supports all four email types natively.

As long as you're on Supabase or Postgres, it's one click to set up and the easiest way to reach your users and grow your app.

Auth emails

There are six auth emails your Lovable app might need, depending on its features:[4]

Here's how the flow works:

1. A user performs an action in your app (like clicking "Reset password"), which triggers code that Lovable AI inserted into your app.
2. The request routes through your backend (either Lovable Cloud or Supabase).
3. Your backend forwards the request to a pre-configured email service (like Resend or Dreamlit) for delivery. This requires both a custom sender (e.g. [email protected]) and a connection between your backend and the email service.

To add these auth emails, prompt Lovable (e.g. "add a magic link signin") and it'll add the appropriate code and UX. From there, configuration depends on your backend.

If you're on Lovable Cloud...

To configure, either prompt the chat or head to Cloud > Custom emails:

You'll be prompted to enter a domain and install the required DNS records for verification.[1] The Lovable Cloud docs cover the full setup process.

If you're on Supabase...

Head to your Supabase dashboard under Authentication > Email to configure your custom sender.

From there, you'll need to configure either a custom SMTP provider or a custom auth hook.[5][7] We cover the full walkthrough here.

A couple of important notes:

• Your email templates are managed outside of Lovable. If you're using a custom SMTP provider, they live in Authentication > Email Templates > Authentication.[4] The defaults aren't pretty and risk getting marked as spam, so customize these before going live.

If you're looking for a fully managed solution...

Dreamlit offers a one-click setup that handles the custom auth hook and email templates for you.

For more detail on Supabase auth email setup, see the dedicated post here.

How to preview and examine runs

With Lovable Cloud or Supabase, the only way to preview with real data is to trigger the flow in your app and send yourself a test email. To debug issues, check Cloud > Logs or click the three dots next to the Custom Emails pane and select Analytics and Logs.[1]

With Dreamlit, select the workflow you want to preview to examine the email template. To make tweaks, prompt the AI. You can check all invocations in the Workflow Runs tab.

Transactional emails

Transactional emails are triggered from your app code, just like auth emails, but they're managed as a separate flow.

If you're on Lovable Cloud and using Custom Emails...

Setup is the same as auth emails above. If you've already completed it, you're ready to go. Just ask Lovable for the email you want (e.g. "when someone adds a comment to a post, send an email to all post authors").

If you're using Resend...

Ask Lovable for the email you want and when to send it, and tell it to use Resend. It'll ask for an API key the first time.

Head to Resend and sign up. Until you verify a domain, Resend's default resend.dev testing domain only lets you send to your own account email.[8] Once you're ready, add and verify a domain, then create an API key under API Keys and paste it into the Lovable prompt.[9][10]

Behind the scenes, Lovable will:

• Create a new secret for your Resend API key and add it to your project
• Create a backend edge function that gets invoked when the app triggers the email

If you're using Dreamlit...

Start a new chat with Dreamlit's AI and describe the email you want sent and when:

You'll get back an end-to-end email workflow, previewed with live database data. Click through each step, tweak the template by prompting the AI, and hit Publish when you're ready.

Email blasts

Lovable doesn't support email blasts out of the box. Here are your options.

Option 1: Export/import manually

Export your user data to a CSV, then import it into a third-party email platform. You can ask Lovable to create a user export, then upload it into Resend or a marketing automation platform like Klaviyo or ActiveCampaign. If you intend to do multiple blasts or want more sophisticated targeting (like segmenting), this approach quickly becomes cumbersome and error-prone.

Option 2: Sync to a third-party email service like Resend

This requires asking Lovable to add code so that whenever a user is created, updated, or deleted, the change syncs to the email service. You'll also need a one-time backfill for existing users. If you want to personalize email content, you need to sync that data too. This approach requires more setup and maintenance, but is more powerful than the manual export/import.

Option 3: Use a database-driven solution

A database-driven solution like Dreamlit connects your database directly to the email platform. No need to sync data back and forth. You operate directly against your source of truth.

Dreamlit's AI introspects your data, understands what you need from your prompt, and builds a one-time email blast (broadcast). Since it's connected to your database, it always operates against the latest data.

Recurring emails

Like email blasts, recurring emails aren't supported in Lovable out of the box.

Option 1: Ask Lovable to set up the recurring email

Prompt Lovable with the schedule you want (e.g. "send a weekly reminder email to my users at 9am Monday EST to remind them to log their calories"). Behind the scenes, this creates a Supabase cron that runs on your chosen schedule, invokes an edge function that fetches the relevant data, prepares the email content, and sends it via your configured email provider (either Lovable Cloud Custom Emails or Resend).[12]

Option 2: Use Dreamlit

In Dreamlit, prompt the AI with the schedule and conditions you want. It sets up the repeating trigger, prepares the email content, and lets you preview the full workflow with live database data before publishing.

With Dreamlit, you can:

• Inspect the audience: See exactly which users and data get pulled for the send
• Preview with real data: View the rendered email template with actual user data filled in, and toggle between different recipients
• Test in sandbox mode: Hold emails in a pending state so you can manually inspect and release them before they go out

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Summary

Email is one of the most powerful tools you have to bring users back, drive engagement, and grow revenue. But only if it's set up correctly.

• Auth emails are required before you go live and need their own configuration, separate from your other email flows
• Transactional emails are triggered by your app code and are the backbone of your engagement strategy
• Email blasts require either a manual export/import process or a database-connected solution
• Recurring emails need a cron job in Lovable or a fully managed workflow in Dreamlit

With Resend and Lovable, you can get most of this working. But you'll run into friction around previewing, testing, and analytics at every step. With Lovable Cloud Custom Emails, you also risk vendor lock-in if you ever want to move your app elsewhere. If you'd rather have everything managed end-to-end with full visibility into every workflow, give Dreamlit a try. It's free to get started and takes about a minute to connect.

Happy building, and may your emails always reach the inbox! 🚀

References

1. Lovable Custom Emails docs
2. Resend Audiences docs
3. Resend Broadcasts docs
4. Supabase Auth Email Templates docs
5. Supabase Auth SMTP docs
6. Supabase Auth rate limits
7. Supabase send-email hook docs
8. Resend testing and verified-domain guidance
9. Resend Domains docs
10. Resend API Keys docs
11. Supabase Database Webhooks docs
12. Supabase Cron docs

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Frequently asked questions

What types of emails does Lovable support out of the box?

Lovable covers auth emails out of the box, and can help you wire up transactional and recurring flows through app code or backend functions. Email blasts still require a separate workflow or provider.

Can Lovable Custom Emails cover both auth and transactional emails?

Yes. In practice, Lovable Custom Emails can cover both auth emails and app-triggered transactional emails. You'll still need a separate setup for blasts, and recurring email support is more limited than a dedicated workflow tool.

Why are Supabase auth emails only reaching my own team during testing?

Because Supabase's default email sender is for testing only. Until you configure custom SMTP or a send-email hook, it only sends to pre-authorized team addresses and is rate-limited.

Do I need DNS records to send auth emails from my own domain?

Yes. Both Lovable Custom Emails and Resend require domain verification so SPF, DKIM, and related DNS records are in place before production sending from your domain.

Can Resend handle blasts and recurring emails for a Lovable app?

Partly. Resend supports Broadcasts, Audiences, Contacts, and Segments for one-time campaigns, but you'll still need to set up the triggering, syncing, and scheduling logic around your app data.

What's the easiest way to preview emails before they go live?

If you're using Lovable Cloud Custom Emails, you can preview and send test auth emails inside Lovable. For code-driven Resend or Supabase flows, preview usually means manually triggering the workflow yourself unless you add a more end-to-end workflow layer.