Transactional email (API)

Transactional email (API)

Send receipts, OTPs and notifications programmatically from your own verified domain.

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Overview

A simple REST API for product email

Generate an API key, POST a JSON payload, and your email is on its way through the same managed delivery pool as your campaigns — from your own authenticated domain.

  • Send one-off transactional email via a single API call
  • Add subscribers to lists programmatically
  • Use your own verified domain and DKIM signature
  • Same deliverability infrastructure as campaigns
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What you get

Key capabilities

API keys

Generate and revoke keys per integration from your dashboard.

transactional.send

One endpoint to send receipts, OTPs and alerts.

subscribers.create

Push signups from your app straight into a list.

Counts toward your plan

Transactional sends use the same quota — no separate billing.

Great for

Who uses this

Order receipts

OTP & verification emails

Password resets

System alerts

Explore more

Related in Solutions

Email campaigns Marketing automation Audience segmentation Deliverability & warmup Reseller / white-label

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