I accidentally deleted an important email permanently by pressing Alt + D. It is known that Alt + D is commonly used as a shortcut in Internet browsers to jump to the URL bar. I thought my Internet browser had focus, but apparently EM Client did. EM Client deleted my mail without any prompt once I pressed Alt + D. I could not find the deleted email anywhere in my Gmail; it was deleted permanently.
I have enjoyed using EM Client up until now, but this is completely unacceptable.
if not in trash look in All Mail folder (Gmail has this folder )
Also check your Parameters so this does not happen again
Menu -Tools -Settings- General uncheck Empty Trash on exit
Menu - Tools - Settings - General - Confirmation check ask before delete mail permanently and
ask before delete mail