Alternatives to Kerio MailServer

Efficient group collaboration with secure email, shared contacts, calendars, and integrated antivirus protection

Magican

Program license: Free

Slick system maintenance suite combining cleanup, optimization, app uninstalling and basic anti-malware protection

Program license: Free

Simple VPN tool that encrypts traffic, switches proxies quickly, and unlocks region-restricted websites and streaming

Program license: Free

Apple's email client offers seamless integration and advanced organization for efficient communication and management

Program license: Free

Stability update improving reliability of the default email client and resolving crash and connection issues

Program license: Full

Provides seamless access to Microsoft email accounts on a Mac with easy synchronization capabilities

Program license: Free

A free email client with a focus on privacy and security with automatic data encryption

Program license: Free

An alternative email client that's sleeker, cleaner and easier to use than bulkier options

Program license: Free

Reliable tool to create complete bootable hard drive backups and manage advanced backup tasks

Program license: Free

Lightweight desktop notifier that previews and manages Gmail messages directly from the menu bar

Program license: Free

Clear out space on your Mac hard drive without having to dig through file after file

Program license: Free

Powerful, customizable email client with smart filters, tabs, and strong spam protection from trusted developers

Program license: Free

Classic Microsoft email client offering straightforward mail management and contact organization for everyday users