Why Your Cold Emails Might Stop Landing in 2025

Jan de Vries · 2026-09-17

You've probably noticed it already. Your outbound campaigns aren't getting the same open rates they used to. And there's a reason for that—buyers are fighting back. ### The AI Arms Race Nobody Asked For Here's what's happening. Sales teams discovered AI could write thousands of personalized emails in minutes. Buyers got buried. So they deployed their own AI to fight back. It's a classic escalation. You build a better mousetrap, someone builds a better mouse. Right now, the mice are winning. ### What Buyers Are Actually Doing Think about your own inbox. How many cold pitches do you delete without reading? Now imagine you could train a filter to catch them all before you even see them. That's exactly what's happening across sales organizations in the US and Europe. Buyers are using automation to screen unwanted messages and reduce inbox clutter. The tools are getting smarter, and they're learning what AI-generated outreach looks like. - Gmail's AI now flags suspicious sending patterns automatically - Enterprise buyers use tools like Superhuman and SaneBox to filter aggressively - Some companies block entire domains known for cold outreach ### The European Twist This matters more than ever as European startups try to scale into US markets. The EU Inc proposal aims to make it easier for European companies to incorporate and compete globally. But if their outreach can't reach American buyers, what's the point? European founders already face an uphill battle. Different time zones. Different business cultures. Now they need to worry about whether their emails even arrive. > "The best salespeople will adapt. They always do. But the days of spray-and-pray are over." ### What This Means for Your Outreach If you're still sending generic cold emails, you're already in trouble. The filters are getting better. The buyers are getting smarter. And the AI writing your emails? It's not fooling anyone anymore. The answer isn't to write more emails. It's to write fewer, better ones. Personalization that actually means something. Research that shows you did your homework. Or maybe—just maybe—pick up the phone. Send a LinkedIn message. Show up at a conference. The inbox is getting crowded, but human connection still cuts through. The AI arms race will continue. The question is whether you'll adapt before your emails stop landing altogether.