AI Email Sorters Make Executives Less Safe
AI email sorters don’t just add vendor risk. They erase the cues executives rely on to spot fraud and protect privilege—speed becomes the vulnerability.
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Everything you need.
Nothing you don't.
You wouldn't leave your office door wide open for strangers to walk in and demand your attention. Why do it with your Inbox? KeepKnown is the Executive Assistant that screens every visitor at the door.
24/7 Vigilance
Real-time monitoring keeps your inbox clean round-the-clock. Every email is instantly checked against your contacts.
Auto Sync
Never miss newly added contacts. Everything syncs automatically from your email provider.
Custom Filters
Manage VIP access lists and domain filtering for complete inbox control.
Privacy First
Contacts are hashed for matching and encrypted for debugging. Never stored as plaintext. We never sell or share your data.
Join thousands simplifying their inbox.
0+
emails filtered and counting
Loved by professionals
See how KeepKnown helps people reclaim their inbox.
"KeepKnown has completely changed how we manage our inbox. We used to waste so much time sorting through junk mail — now it's clean, efficient, and stress-free. The spam control is spot-on, and we finally feel in control of our email again."
Latest Intel
Briefings, strategies, and operational updates for inbox security.
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How to Configure Strict Allow Listing in Outlook 365
Lock down Microsoft 365 so only trusted senders land in Inbox. Setup takes ~60–90 minutes including testing.
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How to Set Up a Contact Only Email Filter
Route non-contacts out of your Inbox in ~10 minutes using Gmail filters, labels, and precise “from:” rules.
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Frequently Asked Questions
Everything you need to know about privacy, security, and how KeepKnown works.
No, we never read your emails. KeepKnown only checks the sender's email address against your contacts list. We don't access, store, or analyze the content of your emails. Your email content remains completely private.
No, your contacts are never stored as plaintext. We store a per-user one-way lookup token (HMAC-SHA256) for matching. For the debugger, we may also store an encrypted copy so you can view the actual address.
Absolutely not. Your information is never shared with, sold to, or used by any third party. Our business model is simple: you pay for the service, and that's it. We don't monetize your data.
Yes. KeepKnown has passed Google's security assessment (CASA Tier 2) and OAuth verification. Google has reviewed our app, verified our identity, and confirmed we handle your data securely.
Yes, always. We never delete emails - they're simply labeled and archived. Click the "KK:OUTSIDERS" label in your email client to see all filtered emails and move any back to your inbox with one click.
Still have questions? Contact our support team
Simple, transparent pricing
Choose the plan that fits your workflow. Start with a 7-day free trial.
Starter
Perfect for personal use
$
29
23
/ month
Less than the cost of 10 minutes of your time.
Billed annually ($276/year)
Or save 20% with yearly billing
- 1 email account connected
- Gmail, Outlook & Microsoft 365
- Unlimited email filtering
- Real-time contact sync
- VIP access lists
Most Popular
Pro
For power users & small teams
$
60
48
/ month
Less than the cost of 10 minutes of your time.
Billed annually ($576/year)
Or save 20% with yearly billing
- 3 email accounts connected
- Gmail, Outlook & Microsoft 365
- Unlimited email filtering
- Real-time contact sync
- Priority support
- Advanced analytics
Agency
For teams & organizations
Custom
Tailored to your needs
- Unlimited accounts
- Team management console
- Dedicated account manager
- Custom integrations
- SLA & uptime guarantee
- Onboarding & training
7-day free trial
Credit card required
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