International SMS API Integration Best Practices Guide

Preparation Before Integration

Understand the API Protocol

• RESTful API vs. SMPP protocol
• RESTful is suitable for most application scenarios
• SMPP is suitable for high-concurrency, high-volume scenarios

Authentication Methods



• API Key authentication (recommended)
• IP whitelist
• Signature authentication (high-security scenarios)

API Call Best Practices

1. Request Design



• No more than 1000 messages per batch send
• Use asynchronous calling mode
• Set a reasonable timeout (5-10 seconds)

2. Error Handling



• Implement complete error code mapping
• Distinguish temporary errors (retryable) from permanent errors
• Implement exponential backoff retry strategy

3. Status Callback



• Implement a callback interface to receive delivery status
• Handle duplicate callback pushes
• Establish a status synchronization mechanism

Security Recommendations

• Rotate API Keys regularly
• Encrypt request parameters during transmission
• Desensitize logs