Transactional email from your app

Automated messages your app sends after an action: password resets, login codes, receipts. Send them from Loops alongside your marketing and product email, on a free tier that never expires.

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Read the API docs

Read the quickstart

Codex Claude Code

1. Connect your first transactional send

Install the Loops tools, verify your sending domain, and publish a transactional template. Then send through the API, an SDK, or your coding agent.

Node

NextJS

NuxtJS

Ruby

PHP

Laravel

POST

https://app.loops.so/api/v1/transactional

{
"email": "[email protected]",
"addToAudience": false,
"dataVariables": {
"firstName": "Alice",
"resetUrl": "https://example.com/reset?token=abc123"
},
"transactionalId": "clw6rbuwp01rmeiyndm80155l"
}

$npm i loops

…/week

View on npm

Learn

API quickstart Contacts API Events API More

2. Where transactional email fits

Send receipts, reset links, and login codes as soon as someone acts, without open or click tracking.

Transactional

Sent to one person right after an action. Password resets, receipts, login codes.

Marketing

Sent to many contacts at once. Newsletters, announcements, and campaigns.

Product

Automated lifecycle sequences. Onboarding, trials, and re-engagement.

3. Authenticate and monitor your sends

Authenticated sending on your own domain, no tracking pixels, and delivery events you can see.

Authenticated sending

Connect your domain and configure DKIM, SPF, and DMARC for authenticated sending.

No tracking pixels

Transactional email skips open and click tracking.

Delivery metrics

See sends, bounces, and spam complaints for every transactional email on the metrics page.

4. Account messages to send with Loops

Verification codes, reset links, and receipts people expect the moment they act.

Account verification

Confirm new sign-ups with a one-time code or verification link.

Password resets

Send a secure reset link the moment someone asks for one.

Payment receipts

Confirm a charge with a clear, itemized receipt or invoice.

Notifications

Alert people to logins, security changes, and account activity.

Transactional email is free to start

Every Loops plan includes transactional email. The free tier includes up to 1,000 subscribed contacts and 4,000 combined marketing and transactional sends in any rolling 30-day window. It does not expire.

Get started

Frequently asked questions

What is a transactional email?

What affects transactional inbox placement?

How does Loops authenticate my domain?

Can I see delivery results?

Is transactional email free?

Start sending transactional email

Create an account, verify your domain, and publish the template your app will send.

Guides