Does Gmail blacklist IPs?

Myth: Mostly False. Gmail does not maintain traditional IP blacklists. They use reputation systems that evaluate IPs dynamically based on sending patterns and engagement rather than static lists.

An IP can have poor reputation at Gmail without appearing on any public blacklist. Gmail's assessment is proprietary and based on their observed signals.

Monitor Gmail reputation through Postmaster Tools rather than checking public blacklists. Gmail's view of your IPs may differ from other sources.