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Throughput Limit for Outbound Long Code SMS
Throughput Limit for Outbound Long Code SMS

Here you will learn about the restrictions for sending via long code SMS.

Alex Conroy avatar
Written by Alex Conroy
Updated over a week ago

List of Restrictions for Sending Long Code SMS

You can find your account rate limits in your messaging section of your account. Please note these limits may differ than the rates listed below.

Level 1 verified users are restricted to 600 total messages per minute account wide. They are also limited to 6 messages per minute on every type of number or sender id.

Level 2 verified customers can avail of the higher limits for the different number types and details can also be seen below.

US long code numbers are restricted to sending 2 messages per minute for any single long code, note this is for unregistered traffic. If you require faster throughput for A2P messages then you must register for 10DLC messaging. You can find more information on 10DLC messaging here.

Toll free numbers are restricted to 1,200 messages per minute per number, but throughput may also be affected by the number's current verification status. You can read more about Toll free messaging here.

Alphanumeric sender ID's are restricted to 60,000 messages per minute, per sender ID.

Short code numbers are restricted to 60,000 messages per minute, per number.

Please note: If you create messages at faster rate then Telnyx will queue up the messages and send them at a reduced rate. Messages that are queued (and not yet sent) will not appear in the MDR reports. We'll queue 4 hours worth of messages. So if you are sending from a unregistered Long Code, your rate is 2 messages per minute, then 4 hours worth of messages is 480 messages. If you send more than 4 hours worth of messages we will drop them and they will not be sent.

Need a higher limit? 

If you require a higher limit, please reach out to via email, and we can talk about raising your message rate limit. 

For more information see our article on Long Code Deliverability Best Practices.

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