BlueMail for Windows is a nice program with a concise interface that is available on desktops, mobile devices and even watches. BlueMail boasts a built-in calendar, address book, and snooze feature that displays emails on a separate screen like a kanban board. Parsing mail is facilitated by convenient sorting and filters. And the ability to combine messages into threads makes the list of messages more compact. The program is available free of charge, a paid subscription is needed only for corporate users.