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Carrier Rate Limits and Throttling
Carrier Rate Limits and Throttling
David Daneshgar avatar
Written by David Daneshgar
Updated over a year ago

There are 2 factors that impact your sending capabilities with Whippy’s SMS Products: Carrier rate limits and the Russell 3000 Index.

Carrier Rate Limits

T-Mobile’s rate limits are on a per day basis, and AT&T’s rate limits are on a per minute basis. This means that you can send a certain number of SMS or MMS per day or per minute based on the carrier rate limits of your subscribed contacts. MMS are also subject to carrier rate limits and may be slower to deliver.

Public or private US businesses not listed on the Russell 3000 Index can send:

  • Up to 4,500 SMS and 2,400 MMS per minute to AT&T recipients

  • Up to 200,000 SMS or MMS per day to T-Mobile recipients

SMS sending for public or private US businesses not listed on the Russell 3000 Index is based on brand score. Below are estimated ranges per brand score.

Other carriers, like Verizon, have rate limits that exceed the throttling threshold which means they won’t impact your sending.

Russell 3000 Index

The Russell 3000 Index is a stock market database that tracks the shares of the 3,000 largest publicly traded companies in the US. Your SMS sends are impacted by whether or not you're on the Index.

Public US businesses listed on the Russell 3000 Index can send:

  • 2,400 SMS or MMS per minute to AT&T recipients

  • 200,000 SMS or MMS per day to T-Mobile recipients

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