10DLC throughput is determined by the carriers, based on a Brand Vetting Score as well as the type of campaign, not on the amount of numbers/10DLCs associated with a campaign.
The tables below explain how AT&T and T-Mobile define each message tier and map Brand vetting scores to throughput levels. As you will notice, throughput levels on T-Mobile are measured on a Brand level basis and have daily allotments. AT&T's throughput levels are based on message class, Brand vetting score, and in some cases by 10DLC number and the throughput is measured on a TPM (transactions per minute) basis.
AT&T NOTE: ** Government Entities will receive AT&T Message Class A or B if they have a verified Government Entity Status (“Government Entity: TRUE”). If they do not have a verified Government Entity Status (“Government Entity: FALSE”), the brand will start in Message Class E or F (AT&T’s standard throughput policy), and can apply for Standard vetting to try and increase their throughput.
TMO Note: ** For Government Entities, they will receive the Uncapped policy for T-Mobile if they have a verified Government Entity Status (“Government Entity: TRUE”). If they do not have a verified Government Entity Status (“Government Entity: FALSE”), they will get the Standard throughput policy and can apply for standard vetting at a chance to increase their throughput.
Note: Verizon is still working on defining its process.
Carriers require a ‘special business review’ request; in case a brand is not satisfied with the defined TPM or message daily quota allotment. T-Mobile charges $5,000 USD to submit a ‘special business review’ request specifically to increase your daily volume. This fee is non-refundable but is currently waived.
Note: Russell 3000 enterprises will be placed in the highest tiers available.
Visit the Sinch 10DLC Product Page to learn more.