Microsoft Outlook vs Gmail keyboard shortcuts

Microsoft Outlook vs Gmail
Action	Microsoft Outlook	Gmail
Reply	Windows`CtrlR`macOS`⌘R`	Windows`R`macOS`R`Linux`R`
Reply all	Windows`CtrlShiftR`macOS`⌘ShiftR`	Windows`A`macOS`A`Linux`A`
Forward	Windows`CtrlF`macOS`⌘J`	Windows`F`macOS`F`Linux`F`
Send	Windows`CtrlEnter`macOS`⌘Enter`	Windows`CtrlEnter`macOS`⌘Enter`Linux`CtrlEnter`
Mark as read	Windows`CtrlQ`macOS`⌘T`	Windows`ShiftI`macOS`ShiftI`Linux`ShiftI`
Mark as unread	Windows`CtrlU`macOS`⌘ShiftT`	Windows`ShiftU`macOS`ShiftU`Linux`ShiftU`