Twilio allows users to send up to 10 message segments per second (MPS) by default using Alphanumeric Sender IDs. Users seeing outgoing message queuing, or those preparing to significantly increase sending rates, may be able to increase outgoing message throughput. This guide explains the options available for the different Alphanumeric Sender ID types:
Non-Registered Alphanumeric Sender ID
In countries where Twilio supports Alphanumeric Sender ID usage without a registration requirement (see here for a full list), Twilio may be able to increase your MPS throughput. Users requesting MPS increases for non-registered Sender IDs must be using a Messaging Service to send messages. If you don’t already have a Messaging Service, create one from the Messaging Services page in Console, and be sure to add your desired Alphanumeric Sender ID to the Sender Pool.
To request an MPS increase for your non-registered Sender ID, please collect the following information, and then submit it in a ticket to the Twilio Support team:
- Your Twilio Account SID
- Your Messaging Service SID
- The name of the Alphanumeric Sender ID associated with your Messaging Service
- The country/countries you plan to send messages to with your Alphanumeric Sender ID
- An estimate of your expected peak message volumes
- (Optional) The MPS you want to request. If you aren’t sure, Twilio can help figure out a sensible value based on your expected message volume.
Once we receive your information we will review and assess the increase request. These requests may take 7-10 business days for review and approval. Let us know if you are facing an urgent deadline for increased throughput, and we will do our best to help.
Registered Alphanumeric Sender ID
When you register an Alphanumeric Sender ID, you have the option of setting that Sender ID as your Default Sender ID for a country. If you do so, we automatically replace the value provided in the From parameter of the API Request with your Default Sender ID for all messages sent to that destination only when the From value does not match any of your other registered Sender IDs for that destination. You can read more about the Default Sender ID here.
This distinction is important when it comes to MPS. When using the Default Sender ID, your message will be sent at the MPS value corresponding to the value you provided in the original From parameter (eg. if your From was a +1 phone number with an MPS of 10, your message would be overwritten to send with the Default Sender ID at an MPS of 10). If you are not using the Default Sender ID, you can follow the process in the section above to increase your MPS for that Alphanumeric Sender ID when using a Messaging Service.