Google is cracking down on spam in honor of Gmail’s 20th anniversary. With nearly two billion users, Gmail is celebrating its success with new rules aimed at reducing spam for its users.

Last year, Google announced measures to target those sending over 5,000 messages to Gmail addresses in a single day. This crackdown on spam includes new authentication requirements, one-click unsubscribe options, and new spam rate thresholds. Mass senders who do not comply will receive temporary errors with error codes on noncompliant messages.

Despite the strict rules, positive feedback has been received from the email ecosystem. Gmail will begin rejecting noncompliant traffic starting on its 20th birthday, further ensuring email safety for users.

It is important to note that these rules only apply to personal Gmail accounts and not to accounts under Google’s Workspaces business productivity suite. Google is committed to improving email safety for its users and celebrating its 20th birthday with these new measures in place.