Does Twilio support concatenated SMS messages or messages over 160 characters?

Yes. With the Messages resource URI, you can send and receive messages containing up to 1,600 characters.

Concatenated messages are supported when sending messages to most carriers* in the United States and Canada. With the Messages resource URI, you can send messages containing up to 1,600 characters. When we receive your request, Twilio will auto segment messages with a special header, which mobile carriers can use to reassemble the segments on the destination handset. Thus messages can appear as one single long message. 

You may also send messages over 160 characters to international phone numbers, but very likely they will appear as multiple messages on the destination handset.

Read our FAQ to know how pricing works for outbound concatenated messages.

Similarly, Twilio supports inbound concatenated messages up to 1,600 characters. Inbound messages over 160 characters will also be received on your Twilio phone number as one single message. The price of the inbound message will be the sum of the total number of segments.

*Some carriers such as Sprint do not currently support concatenated messages on long code messages.

Have more questions? Submit a request
Powered by Zendesk