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Google, Yahoo Go After Spam With Stricter Rules for Bulk Email Senders

Both Google and Yahoo plan to enforce a 'spam rate threshold' that bulk email senders will need to stay under or else they could face filtering.

 & Michael Kan Principal Reporter

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Google’s Gmail and Yahoo are adding new rules that promise to make it easier to avoid unwanted email. This includes requiring bulk email senders to add an unsubscribe function for all messages. 

The new restrictions from the companies target bulk email senders, or at least in Google's case, users that send more than 5,000 messages to Gmail addresses per day. Both companies are signaling they'll filter out email from bulk senders that cross a designated spam rate.

“Moving forward, we’ll enforce a clear spam rate threshold that senders must stay under to ensure Gmail recipients aren’t bombarded with unwanted messages,” Google wrote in a blog post. “This is an industry first, and as a result, you should see even less spam in your inbox.”

Google will enforce the new rules in February while Yahoo will do so in Q1. Google says its AI-powered safeguards already filter out 99.9% of the spam and phishing messages that bombard users' inboxes. “But now, nearly 20 years after Gmail launched, the threats we face are more complex and pressing than ever,” the company added.   

One new rule will require bulk email senders to adopt authentication systems, including SPF, DKIM and DMARC, to prevent email forgery, or when a sender tries to spoof an email using another domain. “You shouldn’t need to worry about the intricacies of email security standards, but you should be able to confidently rely on an email’s source,” Google said in its justification for the upcoming restriction. 

The two other rules include making it easy for consumers to unsubscribe from mass emails with “one click” and enforcing the spam rate threshold, which will also apply to non-bulk email senders, according to a Google support document. In Google's case, email senders that cross a spam rate at over 0.3% will face "increased spam classification."

Google adds, “We aren’t the only ones pushing for these changes. Our industry partners also see the pressing need to institute them,” citing support from Yahoo, which announced similar restrictions on the same day and plans on providing more details in the coming months.

“These practices should be considered basic email hygiene, and many senders already meet most of these requirements,” Google also said. “For those who need help to improve their systems, we’re sharing clear guidance before enforcement begins in February 2024.”

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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