YouMail clocks March U.S. robocalls at 4.2 billion, ending the sub-4B streak

YouMail’s monthly Robocall Index recap puts March 2026 U.S. robocall volume at 4.2 billion calls — 135.7 million per day, roughly 1,600 per second — a 9.8% month-over-month increase that ends “six consecutive months of staying below 4 billion calls.” The piece’s category breakdown has telemarketing at 32%, alerts and reminders at 24%, scam calls at 22%, payment reminders at 15%, and unclassified at 7%. By city, Atlanta tops the list at over 137 million calls in March, with Chicago, Dallas, Houston, New York, and Los Angeles all between 100 and 117 million, most of them up 7-12% month over month.

The post’s most useful caveat is its own: month-over-month volume rose, but daily intensity stayed roughly flat — February has fewer days than March, and that calendar quirk accounts for a meaningful chunk of the headline number. The signal worth keeping is direction, not magnitude. After six months of sub-4-billion totals, the baseline broke; YouMail’s read is that “campaigns are ramping back up” and “scammers are re-engaging at scale.” That makes the 22% scam share particularly worth watching — at 4.2 billion calls, that is roughly 924 million scam calls in a single month, regardless of how the daily-vs-monthly framing lands.

YouMail also flags the operational shape of those scam campaigns: number rotation across thousands of numbers, scripted impersonation of banks and government agencies, payment-verification pretexts. Those are exactly the patterns that turn a robocall problem into a fraud problem and that make number-by-number blocking the wrong unit of analysis. The Robocall Index has been the reference U.S. dataset for years precisely because it tracks volume; the more useful question, increasingly, is what the 22% scam slice is doing on a per-campaign basis.