Overview
Send to Mail Recipient no longer works after Office 2019 64 bit installation.
Instructions
Step 1.
Delete the Mail Recipient shortcut in C:\Users\(user name)\AppData\Roaming\Microsoft\Windows\SendTo
Step 2
Create a new shortcut in C:\users\(username)\appdata\roaming\Microsoft\Windows\SendTo
For location enter "C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE" -c IPM.Note /a
Step 3.
Name it Mail Recipient