Help Center
What are the messaging throughput limits for 10DLC Campaigns?
For registered US long numbers, throughput and volume limits are determined based on who is sending the message (the Brand) and what is being sent (the Use Case and Vertical), not on the number of long numbers associated with the Campaign.
Most frequently supplied limits for average 10DLC campaigns:
AT&T: 240 messages per minute (TPM)
T-Mobile: 2000 messages per day per 10DLC brand
AT&T
AT&T allocates throughput on a text-per-minute basis per the following table. Generally, if the throughput is exceeded, messages will be rejected and could still be billable.
| Message Tier | Use Case (Risk Level) | Use Case | AT&T TPM* |
| A | Standard (low-risk provider) | Declared | 4,500 |
| B | Standard (low-risk provider) | Mixed/Marketing | 4,500 |
| C | Standard (medium-risk provider) | Declared | 2,400 |
| D | Standard (medium-risk provider) | Mixed/Marketing | 2400 |
| E | Standard (high-risk provider) | Declared | 240 |
| F | Standard (high-risk provider) | Mixed/Marketing | 240 |
| Other/Special Use Cases | Special | Variety | Available on request |
*TPM - Text Per Minute
T-Mobile
T-Mobile sets a daily messaging limit at the Brand (i.e., business) level, meaning you can only send messages up to the daily allotted amount. To clarify, if your Brand has multiple campaigns, they will all share this daily message allotment. Once the limit has been reached, delivery for additional messages will be rejected and could still be billable.
See the below chart for a breakdown.
| Risk Level | Use Case Type | T-Mobile Brand Daily Cap |
| Low | Standard | 200,000 |
| Medium | Standard | 40,000 |
| High | Standard | 10,000 |
| Basic | Standard | 2,000 |
How can I find out my Brand/Campaign limits?
Currently, your Brand/Campaign’s volume limits are not visible in the Clickatell Portal. However, a request can be sent to our support team requesting the 10DLC volume limits. Expect a turnaround time of a few days depending on available capacity.
Unregistered US Long numbers have limits enforced by Clickatell. At the time of writing, the daily limits are 5,000 messages per day and 20,000 per month.
Other resources
Contact support
Contact our support team and one of our agents will be in touch with you to answer any questions you have.
Developer docs
Access the latest technical information regarding Clickatell’s channels, products and APIs.
