KeepKnown: Email Screener
Block unknown senders & spam
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Only people you know reach your inbox. Cold emails, spam and unknown senders wait for your review. Nothing is deleted, and any message is one tap from coming back.
KeepKnown is an email screener for Gmail, Google Workspace, Outlook and Microsoft 365. Mail from people you know lands in your inbox. Cold emails, spam that slips past your provider's filter and messages from unknown senders wait for your review until you decide.
HOW THE EMAIL SCREENER WORKS
KeepKnown checks each new message against the people you already know: your synced contacts, the senders you approve and your VIP domains. Known senders go straight to your inbox. Mail from unknown senders moves out of your inbox to a separate review label or folder. Nothing is deleted, and every screened email stays one tap away.
BLOCK COLD EMAILS AND SALES OUTREACH
Sales pitches, cold outreach sequences, unknown vendors and newsletters you never signed up for stop interrupting your day. Block a sender or a whole domain when you never want to hear from them again.
LET THE RIGHT PEOPLE IN
Approve a sender or domain once and their future mail comes straight through. Add your company, clients and partners as VIP domains so new people from those organizations are never screened.
REVIEW SCREENED EMAIL IN SECONDS
Open the review queue to restore a message to your inbox, trust its sender, move it to Reading Later or keep it screened. Activity shows which rule matched, why it matched and what happened next.
EMAIL FILTER RULES WITH A SAFE PREVIEW
Start from a template or build your own email filter from conditions such as trusted contacts, approved domains, sender groups, message headers, prior conversations and schedules. Preview a rule against your recent mail before it runs, and approve it only when the matches look right.
UNSUBSCRIBE FROM UNWANTED NEWSLETTERS
Scan recent mail for subscriptions and send unsubscribe requests for the ones you no longer want. Each request asks for your confirmation first.
PRIVACY BY DESIGN
KeepKnown does not read email bodies for core filtering. Your mail provider authorization stays on KeepKnown's secured server and is never stored on your phone. Export or permanently delete your account and data at any time.
GET STARTED
Create an account with email, or continue with Apple, Google or Microsoft, then connect your inbox. Start your 7-day free trial with no card needed. Founder and Executive Pro subscriptions are available in the app.
Terms of Use: https://keepknown.com/terms-services/
Privacy Policy: https://keepknown.com/privacy-policy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Start a 7-day free trial right in the app, with no card needed.
Also new: unsubscribe from a sender right in the app, swipe to retire a rule, review a rule before it goes live, and clearer activity that shows what happened to each message. Plus fixes for unfinished inbox setup.
The developer, Aymane Sennoussi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- Contacts
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Aymane Sennoussi
- Size
- 26.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- KeepKnown Executive Pro $69.99
- KeepKnown Founder Annual $229.99
- KeepKnown Executive Pro Annual $599.99
- KeepKnown Founder $29.99
- Copyright
- © 2026 Aiman Software Ltd.