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REST API × MailTier

Import contacts, send messages and manage automations from your app.

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Events you can act on

Turn REST API activity into timely messages

Each event maps to a real customer moment, so journeys trigger from billing, store, product, or profile changes automatically.

  • contact.upserted
  • message.sent
  • segment.updated
API / send
send-email.ts 202 Accepted
await fetch(`${MAILTIER_URL}/api/send`, {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "X-API-Key": process.env.MAILTIER_API_KEY!,
  },
  body: JSON.stringify({
    from: "[email protected]",
    to: user.email,
    subject: "Your order is confirmed",
    html,
  }),
})

Setup

Connected in three simple steps

Step 01

Create token

Authorize a narrowly scoped connection with clear ownership.

Step 02

Call endpoints

Map identities and events to your shared customer model.

Step 03

Monitor request logs

Validate the event stream, then activate the first journey.

Keep exploring

More ways to connect your stack

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ST

Stripe

Trigger lifecycle emails from invoices, trials, subscriptions and failed payments.

SH

Shopify

Automate abandoned cart, post-purchase and winback messages.

WO

WooCommerce

Bring store orders and customer behavior into MailTier segments.

Put REST API data to work.

Connect the first REST API event, validate customer identity, and launch a working journey with our team.

Start free Book a demo