What are some alternatives?
When comparing Rambox and Shift, you can also consider the following products
Franz - Franz is your messaging app for WhatsApp, Facebook Messenger, Slack, Gmail, Telegram and many many more.
Station - Station unifies all your work tools in one neat & productive interface.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Pidgin - Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.