Private inbox screening for every executive address that gets scraped or shared.
Roll out contact-based screening across Google Workspace, Gmail, Outlook, or Microsoft 365. Known people reach the inbox; outsiders move to a recoverable review area. No AI guessing. No message-body scanning.
Google Workspace + M365
Google verified OAuth
Recoverable routing
959,762
outsider emails filtered so far
2 minutes
typical first inbox connection
0 bodies
read to decide sender access
For public-facing leaders
Founders, partners, advisors, and executives whose addresses attract cold outreach, vendor spam, and recruiter spray.
For privacy-sensitive teams
Sender relationship decides routing. KeepKnown does not need to read message content or train an AI model on inbox data.
Get a rollout plan
Tell us where the noise is.
We will reply with the provider path, rollout sequence, and next step for your team size.