diff --git a/messenger.js b/messenger.js
index 0eecc3a..2ab4e77 100644
--- a/messenger.js
+++ b/messenger.js
@@ -36,11 +36,12 @@ module.exports = {
     config = my.envar?.SMS || wo.envar?.SMS || {}, // ['ALIYUN','UNICLOUD','TENCENT'].includes(config.vendor)
     msg, // for 'DXTON'
     msgParam,
+    // 以下参数可在 config 内部，或者在这里再次覆盖
     msgTemplate,
     signName, // for 'ALIYUN', 'TENCENT'
     appid, // for 'UNICLOUD', 'TENCENT'
   } = {}) {
-    if (/^\+\d+-\d+$/.test(phone) && config.vendor) {
+    if (/^\+\d+-\d+$/.test(phone)) {
       if (config.vendor === 'DXTON' && msg) {
         return await this.sendSmsDxton(phone, msg, config)
       } else if (config.vendor === 'ALIYUN' && msgParam && msgTemplate) {
@@ -50,7 +51,7 @@ module.exports = {
       } else if (config.vendor === 'TENCENT' && msgParam && msgTemplate) {
         return await this.sendSmsTencent({ phone, msgParam, msgTemplate, appid, signName, config })
       } else {
-        return { _state: 'SMS_UNKNOWN_VENDOR', error: {} }
+        return { _state: 'SMS_UNKNOWN_VENDOR', error: { unknownVendor: config.vendor } }
       }
     } else {
       return { _state: 'SMS_INVALID_PHONE', error: {} }