如何通过Twilio向多个WhatsApp号码发送相同消息？

Got it, let's tackle this bulk messaging issue with Twilio's WhatsApp API. The problem you're hitting is straightforward: Twilio's messages.create() method doesn't accept an array for the to parameter—it only processes a single number at a time, which is why only your first recipient gets the message.

Here are two reliable approaches to send the same message to multiple numbers:

方案1：逐个循环发送（简单易实现） #

If your recipient list is small, just iterate through the number array and call Twilio's message API one by one. Use async/await to handle the asynchronous operations properly:

const accountSid = 'mySid';
const authToken = 'mytoken';
const client = require('twilio')(accountSid, authToken);

const sendWhatsAppMessage = async (toNumber) => {
  try {
    const message = await client.messages.create({
      from: 'whatsapp:+14155238886',
      body: 'Hello there!',
      to: toNumber
    });
    console.log(`Message sent to ${toNumber}, SID: ${message.sid}`);
  } catch (error) {
    console.error(`Failed to send to ${toNumber}:`, error.message);
  }
};

const bulkSend = async () => {
  const numbers = ['whatsapp:+xxxxx','whatsapp:+xxxxxx'];
  // Send messages one after another (serial execution)
  for (const number of numbers) {
    await sendWhatsAppMessage(number);
    // Optional: Add a short delay to avoid hitting Twilio's rate limits
    await new Promise(resolve => setTimeout(resolve, 1000));
  }
};

bulkSend();
module.exports = app;

方案2：并行发送（效率更高） #

For larger recipient lists, use Promise.allSettled to process requests in parallel—it's much faster, and won't let a single failed request break the whole batch:

const accountSid = 'mySid';
const authToken = 'mytoken';
const client = require('twilio')(accountSid, authToken);

const sendWhatsAppMessage = (toNumber) => {
  return client.messages.create({
    from: 'whatsapp:+14155238886',
    body: 'Hello there!',
    to: toNumber
  })
  .then(message => ({ number: toNumber, success: true, sid: message.sid }))
  .catch(error => ({ number: toNumber, success: false, error: error.message }));
};

const bulkSend = async () => {
  const numbers = ['whatsapp:+xxxxx','whatsapp:+xxxxxx'];
  // Send all requests in parallel
  const results = await Promise.allSettled(numbers.map(number => sendWhatsAppMessage(number)));
  
  // Process and log results
  results.forEach(result => {
    if (result.status === 'fulfilled') {
      const data = result.value;
      if (data.success) {
        console.log(`Successfully sent to ${data.number}, SID: ${data.sid}`);
      } else {
        console.log(`Failed to send to ${data.number}: ${data.error}`);
      }
    } else {
      console.error(`Request failed: ${result.reason.message}`);
    }
  });
};

bulkSend();
module.exports = app;

关键注意事项 #

• Number Format: Make sure all target numbers follow the strict format whatsapp:+[country code][digits only], e.g., whatsapp:+1234567890
• Rate Limits: Twilio enforces rate limits for WhatsApp API. For large batches, consider using Twilio's Messaging Service to handle rate control automatically, or add intentional delays between requests
• Error Handling: Always include error catching for bulk sends—this helps you track which messages failed and why, without crashing the entire process

内容的提问来源于stack exchange，提问作者digital and olé