The following functions can be called using the keyboard navigation.
Switch between menu bar, folder view, list view and display area  | 
 [Ctrl]+[F6] on Windows and Linux machines. [F6] on MacOS machines.  | 
Select an app in the app launcher  | 
[Arrow down] or [Arrow up]  | 
Select a function, an input field or a checkbox.  | 
 [Tab] [Shift]+[Tab]  | 
execute the function selected  | 
[Enter]  | 
Enable or disable a selected checkbox  | 
[Space]  | 
Switch between selection fields  | 
Arrow keys  | 
Move the cursor in input fields  | 
Arrow keys, [Home], [End]  | 
Browses one page up or down in the folder view or the list view.  | 
[Page up], [page down]  | 
Open or close a folder in the folder view  | 
Arrow left or right  | 
Select elements in the folder view, the toolbar, the sidebar or the display area  | 
Arrow keys  | 
Close a pop-up or cancel a window  | 
[Esc]  | 
Delete selected emails, folders or files  | 
[Del] or [Backspace]  | 
Select all elements in a list view  | 
[Ctrl]+[a]  | 
Parent topic: Using the Keyboard Navigation