Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown] "bSendMailShareRedirection"=dword:00000000
https://helpx.adobe.com/acrobat/kb/send-email-attachment.html
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown] "bSendMailShareRedirection"=dword:00000000
https://helpx.adobe.com/acrobat/kb/send-email-attachment.html