Re:Work is a powerful email client app that uses ActiveSync to provide a secure and safe email experience. Developed by 9Folders Inc., this app is designed to cater to business and personal email needs. With a sleek and beautiful user interface, Re:Work offers a variety of features that make it stand out from other email clients. One of the most notable features is the ability to collaborate with colleagues using shared mailboxes and calendars. Additionally, the app supports multiple accounts and provides a unified mailbox for all your emails.

Re:Work supports Microsoft Exchange Server, Office365, and Google Workspace, along with other popular email services like Yahoo, iCloud, GMX, and AOL. The app also offers Direct Push Synchronization with Exchange ActiveSync, which ensures that emails are delivered instantly. Other features include S/MIME support, a Global Address List (GAL), and a full HTML signature editor. The app also supports the Modern Authentication for Office 365 and provides a workspace for accounts. With a yearly subscription of $19.99, Re:Work is an excellent choice for those who want a secure and feature-packed email client app.