Send API
Send Single

Send A Single Email

Use the single send endpoint for transactional email such as login codes, receipts, onboarding messages, and notifications.

Example request

curl -X POST "https://app.yourdomain.com/api/batch_mail/api/send" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $PING8_API_KEY" \
  -d '{
    "recipient": "user@example.com",
    "attribs": {
      "first_name": "Alex"
    }
  }'

Never hardcode API keys in source code.

Success response

The API queues the message. Delivery outcome arrives later through logs, analytics, and lifecycle telemetry.

Common failures

  • Invalid API key.
  • API template inactive.
  • Sender domain not verified.
  • Recipient suppressed.
  • Delivery engine disabled.
  • IP allowlist does not include the caller.
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