Product emails triggered by your app

Build onboarding, trial, and re-engagement workflows around your product events. Keep contact data current so each email reflects the user’s latest state.

Start for free

See pricing

“Loops is super simple, intuitive, and has everything we need without the bloat”

Luca MarraFounder, Cosmos

“Loops is focused, fast, and does just what we need”

Jorn van DijkCo-founder, Framer

Loops assistantAnswers from the docs

Ask anything about installing, migrating, or building with Loops.

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1. Connect your app

Use the Loops API, an SDK, or an integration to sync the contact properties and events your emails need.

Connect the tools already in your stack

Webhooks Supabase Clerk Zapier Framer Make Segment Webflow PostHog Stripe Auth0 View all

Build with the API or let your agent do it

POST

https://app.loops.so/api/v1/contacts/create

{
"email": "[email protected]",
"firstName": "Alice",
"lastName": "Smith",
"source": "signup_form",
"subscribed": false,
"userGroup": "paying"
}

$npm i loops

…/week

View on npm

2. Add your audience

Import contacts, keep their properties current, and segment them for your workflows.

Add contacts

Import your list and keep each person’s opt-in status.

Sync properties

Keep details like plan and role up to date on every contact.

Build segments

Group people by plan, activity, or anything else you track.

Personalize journeys

Pick each person’s next email based on where they are.

3. Trigger events when customer data changes

Start an email when someone signs up, changes plan, joins a list, or does something in your app.

Contact added

Any new contact

someone signs up

Contact updated

Plan changes

they upgrade

Added to list

Newsletter

they subscribe

Event received

Trial started

sent by your app

Every workflow starts with one of these four triggers.

4. Emails flow out automatically

After the trigger matches, Loops follows your timers, branches, and audience filters. Your app must keep the properties used by those checks current. See how the workflow builder works.

Learn

Triggers Branching Playbooks More

Emails you can ship today

Onboarding, welcome, product update, and waitlist emails you can adapt and ship.

Onboarding emails

Help new users finish setup and reach their first win.

Welcome emails

Confirm signup and give the new user one next step.

Product update emails

Share new features, fixes, and release notes with your users.

Waitlist emails

Keep early sign-ups updated until you launch.

Product email is free to start

Every Loops plan includes workflows, events, and contact properties. The free tier includes unlimited contacts and up to 4,000 combined marketing and transactional sends to your first 1,000 contacts in any rolling 30-day window. It does not expire.

Start for free

1,000

Subscribed contacts

4,000

Sends every 30 days

All

Features included

Never expires