ProviderSinch, T-MobileIn effect

Sinch enforces T-Mobile daily brand limits on its own platform

Messages over the daily limit stop at Sinch, before they reach T-Mobile.

Published , updated

What changed
Sinch now enforces carrier 10DLC brand throughput limits on its platform. The first phase covers T-Mobile’s daily brand limits. The limit is shared by all campaigns of a brand, so one busy campaign can block the others until the limit resets.
Who is affected
Sinch customers that send 10DLC traffic to T-Mobile, most of all sole proprietor and low-tier brands with small daily limits.
When
Effective . Announced .
What to do
Find the T-Mobile daily limit for each brand and how its campaigns share it. Spread large sends over the day, and watch for failed or delayed messages.

T-Mobile limits how many messages a 10DLC brand can send to its subscribers each day. The limit depends on the brand's vetting score. All campaigns of the brand share it, also campaigns registered at other providers.

From 1 June 2026, Sinch checks this limit on its own platform, before traffic reaches T-Mobile. This is the first phase, and it covers T-Mobile's daily brand limits.

Sole proprietor brands and brands with a low vetting score have the smallest limits, so they reach them first. A brand with several campaigns can find that one busy campaign uses the whole daily limit and blocks the others until the next day.

Related

Catch 10DLC violations before a carrier does

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