K9 Alternatives & Competitors

Newton is a fully featured mail client available for Android, iOS, macOS and Windows.

Key Newton Mail features:

Feature-Rich Cross-Platform Support Unified Inbox Subscription Model

myMail is the smart email app for managing all your accounts on iOS and Android.

Key myMail features:

User-Friendly Interface Unified Inbox Push Notifications Enhanced Security

Smart hosting solutions for small businesses, eCommerce, and personal websites.

Key InfinyHost features:

Affordability Ease of Use Customer Support Performance

Try for free paid Free Trial $3.95 / Monthly

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

Key Gmail features:

Generous Storage Integration with Google Services Powerful Search Functionality Spam and Virus Protection

Android Mail Client.

Key Aqua Mail features:

User-Friendly Interface Multiple Account Support Customizability Integration with Popular Services

Secure email with absolutely no compromises. Get your free encrypted email account today.

Key ProtonMail features:

End-to-End Encryption Zero Access to User Data Swiss Privacy Laws Open Source

freemium €5.0 / Monthly (user - 5 GB)

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Key Microsoft Outlook features:

Integration with Microsoft Ecosystem Calendar and Task Management Strong Security Features Customizable Interface

Open source, privacy friendly email app.

Key FairEmail features:

Privacy-first Open Source Feature-rich Customizable

Open Source

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues.

Key Spark Mail features:

Smart Inbox Collaborative Email Customization Unified Inbox

Open Source

Get your encrypted mailbox for free.

Key Tutanota features:

Privacy-Focused Open Source GDPR Compliant Ad-Free Experience

Open Source

The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.

Key Spamihilator features:

High Efficiency Customizable Filters Compatibility User-Friendly Interface

Spamato is a spam filter system that combines several anti-spam techniques, from which thousands of...

Key Spamato features:

Multi-Engine Filtering Open Source Platform Independence User Customization

Home · Products · Mods · Liquids · Contact Us · Where To Buy. The Boxer Mod. Featuring a YiHi SX350J-v2 Chipset. Evolv DNA200. and now Evolv DNA75.

Key Boxer features:

Unified Inbox Quick Replies Swipe Gestures Task Management

POPFile classifies email into categories you define.

Key POPFile features:

Accuracy Customizability Open Source Multi-language Support