Alert21 Guide
Step-by-Step Messaging and DLT Guides
Use these guides to understand the concepts behind production messaging before you integrate an API.
Priority Guides
- What is DLT?
- How DLT registration works.
- What is a DLT Template ID?
- What is a Sender ID/Header?
- What is a Principal Entity ID?
- SMS API integration guide.
- Transactional vs promotional communication.
- SMS delivery receipts explained.
- SMS character/segment limits.
- OTP SMS best practices.
EVERY ALERT. ONE API.
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