How to copy many emails to a specific folder rather than copy/paste the contents of each message?
If the photos and measurements are attachments you could use Automator to download the selected messages to a folder.





Edit: I wrote this AppleScript that will download the message and the attachments for all the selected emails in Mail. Make a new folder in your home directory called Emails and run the following code in AppleScript Editor.

NOTE: Make sure the Emails folder is empty. There may be problems if there are items in it already.

tell application "Mail"
    set the_messages to selection
    repeat with this_message in the_messages
        set message_subject to subject of this_message
        set message_body to content of this_message
        set download_path to "~/Emails/\"" &amp; message_subject &amp; "\""
        set save_path to (POSIX path of ("/Users/" &amp; (short user name of (system info)) &amp; "/Emails/" &amp; message_subject &amp; "/"))

        (* create a directory for the message and attachements *)
        do shell script "mkdir -p " &amp; download_path

        (* save message body into a file *)
        do shell script "echo \"" &amp; message_body &amp; "\" &gt; " &amp; download_path &amp; "/message.txt"

        (* save the attachments *)
        repeat with the_attachment in this_message's mail attachments
            save the_attachment in save_path &amp; ":" &amp; (name of the_attachment)
        end repeat
    end repeat
end tell