Set EM client as default mail program.

 
a workaround for this bug, add the following entry to the registry, to register the em Client as the default mail client user wide
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\SOFTWARE\Clients\Mail]
@=”eM Client”
or Systemwide registry if ou want to overwrite all users clients
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Mail]
@=”eM Client”
Then the context menu item Sendto -> Mail recipient is […]