We Changed Our Entire Cold Email Setup (New Rules)

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Credit: Jay Feldman aka "Lead Gen Jay"

A very timely and relevant PSA from Jay everyone (in light of the recent "Google slap") - take note!! Following is what he wrote in his email that accompanied this video.

Google shut down thousands of Gmail cold email accounts last month.

We used it as a forcing function to redesign our entire infrastructure. Here's what changed:

Core Changes:

No custom tracking domains — They're detectable fingerprints. Remove CNAME records entirely.
No open/click tracking — Avoid unsubscribe links. Manually honor opt-outs.
Keep volume under 20 emails/day per mailbox — Low volume = lower detection risk.
Use AI block lists — Instantly AI's filters skip hostile prospects and spam traps automatically.
Diversify mailbox sources — Mix Google reseller accounts, Microsoft 365, and private SMTP providers (Mission Inbox, Mailin.ai).

Why this matters: Fingerprints = patterns ESPs use to flag cold email accounts. Removing them = longer account lifespan.

Bottom line: SMTP + diversification = the future of cold email infrastructure.

(Heads up