Sales & Customers

How do I keep my cold email out of spam in the AI era?

Deliverability is now the hard part of outbound: Google and Yahoo enforce SPF, DKIM, DMARC and a 0.3% spam-complaint ceiling, Microsoft Outlook has rejected unauthenticated mail from domains sending over 5,000 a day since May 2025, and AI-written blast patterns get flagged fast. The playbook is boring and non-negotiable: send from separate warmed-up domains, keep each mailbox under about 25 to 30 emails a day, verify every address so bounces stay under 2%, and write like a human. Let an AI tool blast thousands of emails and you can burn your domain reputation in weeks.

Part of Cold email on eChai Explore.

On the AI map, 29 October 2026 Prospecting and sales

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Cold Email

More in Sales Prospecting

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Also in Starting Up

The same ground, over in Get your first customers, our Starting Up track.

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