After reinstalling EM Client when I upgraded to Windows 10, I cannot find my local folders and it appears that all of my emails are deleted. Have searched the AppData folder and cant find what I am looking for. Please help me to retrieve my previous local folder.
if Windows 10 deleted your old database, I am afraid the only way to restore your Local folders would be through a backup. If you have made any backups, go to File>Restore and your database should be back.
If you did not make any backups or copied your database anywhere, I am afraid there is no way to restore them.