description Twilio Programmable Messaging API Overview
Twilio is the industry leader for programmatic communication. Its Messaging API allows developers to send, receive, and manage SMS, WhatsApp, and voice calls programmatically from almost any language. It handles the complexities of carrier routing, compliance, and internationalization, making it reliable for mission-critical customer communication channels.
help Twilio Programmable Messaging API FAQ
What can Twilio Programmable Messaging send?
Twilio Programmable Messaging can send and receive SMS, MMS, and WhatsApp messages through API calls and webhooks. Developers usually work with phone numbers, Messaging Service SIDs, and callback URLs.
Why do Twilio SMS apps need A2P 10DLC registration in the United States?
In the US, application-to-person traffic over 10-digit long codes is governed by A2P 10DLC rules. Businesses sending SMS at scale through Twilio often need brand and campaign registration to reduce filtering and comply with carrier requirements.
How does Twilio handle inbound text messages?
When a user replies to a Twilio number, Twilio can send an HTTP webhook to your application with fields such as From, To, and Body. Your app can then respond with TwiML or call the REST API to continue the conversation.
Why do developers compare Twilio with SendGrid?
Twilio acquired SendGrid in 2019, but the products solve different communication channels. Twilio Programmable Messaging handles SMS, MMS, and WhatsApp, while SendGrid is focused on transactional and marketing email.
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