"Gmail at 20: A Journey from April Fools' Joke to Spam Fighter"

TL;DR
Google's Gmail celebrates its 20th birthday with new rules aimed at reducing spam, targeting bulk senders who violate provisions by sending over 5,000 messages to Gmail addresses in a single day. The measures require authentication, one-click unsubscribe options, and adherence to new spam rate thresholds. While receiving positive feedback, the rules only apply to personal Gmail accounts, not those under Google's Workspaces business suite.
- Happy 20th birthday Gmail, you're mostly grown up – now fix the spam The Register
- 20 years of Gmail The Verge
- Happy birthday, Gmail! What would we do without you? Marketplace
- 20 Years Ago, Gmail Almost Never Happened. It All Came Down to 1 Customer Complaint Inc.
- Gmail debuted on April Fool's Day 20 years ago. The joke is still on us. Popular Science
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