Drag&Drop E-Mails from Apple mail to a client or a contact or a projekt

I would really appreciate it if Studiometry allowed for the simple drag-and-drop saving of emails—including attachments like PDFs, JPGs, etc.—directly to a client or contact record. Ideally, this would capture the date received or sent, the subject line, and the full email content along with the attachment. To prevent the database from becoming too large, there should be an option in the settings—or a choice made for each individual email—to save either a full copy of the email or just a link to it, thereby saving space. It is possible this feature already exists, but if so, I haven't yet figured out how to use it.