Here is the entry on computer in use with Win 11 Pro…
HKEY_CURRENT_USER\SOFTWARE\Clients\Mail\eM Client
No other entries for this key
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Mail\eM Client\shell\open\command
In Right hand pane is:
Name:Default
Type:REG_SZ
Data:E:\Program Files\eM Client\MailClient.exe
(your address WILL BE different as this is a non-standard installation)
Other Software called will be configured in your OS - this can be added manually or perhaps there is an option at installation pf software.
¡Buena suerte!
Alvaro for skybat
¡Saludos desde Valencia la soleada en España!
¡Mis mejores deseos y mantente a salvo!