知识库审核日期：2026-08-20可信度：中适用范围：20个重点市场
资料来源（11）
- Twilio：Pricing Messaging Countries resource
- Twilio：Messages resource
- Twilio：Regulatory Guidelines for SMS by country
- Amazon Web Services：Supported countries and regions for SMS messaging
- Amazon Web Services：SMS event types
- Telnyx：Programmable Messaging documentation
- Telnyx：Messaging error codes
- Vonage：SMS API overview
- Vonage：SMS delivery receipts and error codes
- Sinch：SMS API documentation
- Sinch：Retrieving SMS delivery reports
候选不是采购结论
结果不包含账户实时价格、运营商直连层级和真实送达率；必须通过报价与同批测试完成选择。