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 10 messages per minute for any single long code. If you require faster throughput then you must purchase more long codes and leverage number pooling. This rate is the recommended rate set by mobile operators and if we go above it, they will block the numbers used.
Toll free numbers are restricted to 1,200 messages per minute, per number and are ideal for marketing campaigns.
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 one hour worth of messages. So if you are sending from Long Code, your rate is 10 messages per minute, then one hour worth of messages is 600 messages. If you send more than one hour 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 email@example.com via email, and we can talk about raising your message rate limit.
For more information see our article on Long Code Deliverability Best Practices.