Sorry for the delay in response to your query. As per the description above, you want the add on of Adobe Send and Track for Outlook, Is that correct?
Please download the plug-in from the following link: Send and track large files easily | Adobe Send & Track
For more information about Adobe Send and Track for outlook , you may refer to the link: Adobe Send & Track for Outlook, Acrobat
Feel free to update this discussion in case you need further assistance.