Upvoting on behalf of a client who needs to separate prospect emails from emails to customers in reporting. Would be great to be able to include an email type.
As somewhat of a workaround, we have decided to create lists of contacts based on “Subject Line Contains” and then create a specific phrase that Sales needs to include in the subject line of all emails to each “type” of contact that they do not include in others. Then we create reports based on the lists to understand how many contacts are in them/were created in a certain amount of time. It’s not foolproof but it does allow for some reporting.