<b>CONFIRMED: The automation that breaks most cold-outreach setups isn't the sequence — it's the sending too f

<b>CONFIRMED: The automation that breaks most cold-outreach setups isn't the sequence — it's the sending too fast.</b>
Gmail and Yahoo tightened bulk-sender rules: enforced authentication, low spam-complaint thresholds, easy one-click unsubscribe. Automation that blasts a fresh domain trips every wire.

The fix lives upstream of the campaign — domain warmup, gradual volume ramps, and separate sending domains for cold versus transactional.

What we're hearing: the operators who survived the changeover treated warmup as a multi-week automation of its own, not a checkbox.

Watch this.