Saving e-mail threads in Mail.app
To save an entire e-mail exchange from Mail.app to a text file, select the messages you want to save. Then select File: Save As…, and save the messages as plain text or rich text wherever you want. That file will have all the selected messages ordered by date.
If you’d rather have save the messages as a PDF file, choose File: Print…, open the PDF drop-down menu and choose Save as PDF. This will save each message as a separate PDF. …




