Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
ElectronMail - Unofficial desktop app for ProtonMail and Tutanota end-to-end encrypted email providers
DejaLu - Fast and Simple Email Client for Mac
Mailvelope - Mailvelope open source project. OpenPGP in your browser.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Bridge - Build a culture that let’s every employee thrive. Learning management system: performance enablement, career development, pulse surveys, and more. Stop turnover...