Messaging API

Send transactional SMS

Send transactional SMS through the Resent API

Send transactional SMS messages for OTPs, alerts, and notifications.

SMS sending is available from the Resent dashboard under Transactional → SMS. API coverage is expanding — use the patterns below as the integration surface stabilizes.

Prerequisites

  1. Create an API key
  2. Configure an SMS sender in the dashboard

Send an SMS

curl -X POST 'https://api.resent.com/sms' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -H 'User-Agent: my-app/1.0' \
     -d '{
  "to": "+15551234567",
  "body": "Your verification code is 482193"
}'

Next steps

Send transactional email

Transactional email with the Resent Email API.

Send WhatsApp

Templates and in-window replies on WhatsApp.