Cold Email Regulations in 2026: What Changed and How to Adapt

## What Changed in 2026 1. Google's February update — Stricter authentication requirements 2. Microsoft enforcement — Outlook now penalizes bulk senders harder 3. GDPR enforcement trends — Larger fines for B2B email violations 4. One-click unsubscribe — Now required by all major ESPs 5. Domain reputation scoring — More weight on sending patterns ## How to Adapt - Maximum 50 cold emails/domain/day - SPF, DKIM, DMARC on every sending domain - Verified, opted-in lists only - Clear unsubscribe in every message Audit your compliance.