When you want to send the log using a standard MAPI email client, I get the error message "Unexpected error in the MAPI client". See attached screenshot.
Email client used: Thunderbird 45.
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This is a bug or configuration issue not a feature request. Sending email through MAPI is already supposed to work, they don't need to add that as a new feature. If it's not working for you then you should open a support ticket.