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 1 message per 10 seconds for all number types.
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 6 messages per minute for any single long code. If you require faster throughput then you must purchase more long codes. If you ignore these recommendations, then the mobile operators will block your numbers.
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 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.
Need a higher limit?
By default, your overall Telnyx portal account is limited to sending 1 message / second.
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.