Comparison of SMS messaging in the US and Canada for long codes, short codes, and toll-free phone numbers

This guide explains the capabilities and key differences long code, short code, and toll-free phone numbers in the US and Canada:

  Long code Toll-free Short code
Coverage Can send SMS to any country. Can send SMS to any country. Can send SMS within their own country only.*
Voice call capable Yes Yes No
SMS filtering profile Application-to-Person (A2P) traffic is subject to carrier filtering. Reduced carrier filtering to the United States only. No carrier filtering, as long as you comply with the use case submitted in your short code application.
SMS throughput 1 SMS segment per second, can't be increased. 3 SMS segments per second by default, but can be increased. Contact Sales for more information. 100 SMS per second by default, but can be increased. Contact Sales for more information.
MMS capable Yes Not capable of MMS. Capable of MMS with a one-time enablement fee.

* To send short code SMS messages in both the US and Canada, you would need two different short codes; one in each country.
Standard long code filtering profile to messages sent to Canada and other non-US locations.

For more details on the different types of numbers and their capabilities, please see the following resources:

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