twilio-communications

name	twilio-communications
description	Build communication features with Twilio: SMS messaging, voice calls, WhatsApp Business API, and user verification (2FA). Covers the full spectrum from simple notifications to complex IVR systems a...

Twilio Communications

Patterns

SMS Sending Pattern

Basic pattern for sending SMS messages with Twilio. Handles the fundamentals: phone number formatting, message delivery, and delivery status callbacks.

Key considerations:

• Phone numbers must be in E.164 format ([phone])
• Default rate limit: 80 messages per second (MPS)
• Messages over 160 characters are split (and cost more)
• Carrier filtering can block messages (especially to US numbers)

When to use: ['Sending notifications to users', 'Transactional messages (order confirmations, shipping)', 'Alerts and reminders']

from twilio.rest import Client
from twilio.base.exceptions import TwilioRestException
import os
import re

class TwilioSMS:
    """
    SMS sending with proper error handling and validation.
    """

    def __init__(self):
        self.client = Client(
            os.environ["TWILIO_ACCOUNT_SID"],
            os.environ["TWILIO_AUTH_TOKEN"]
        )
        self.from_number = os.environ["TWILIO_PHONE_NUMBER"]

     () -> :
        
        pattern = 
         (re.(pattern, phone))

     () -> :
        
        
          .validate_e164(to):
             {
                : ,
                : 
            }

        
        segment_count = ((body) + ) // 
         segment_count > :
            ()

        :
            message = .client.messages.create(
                to=to,
                from_=.from_number,
                body=body,
                status_callback=status_callback
            )

             {
                : ,
                : message.sid,
                : message.status,
                : segment_count
            }

         TwilioRestException  e:
             ._handle_error(e)

     (