En massa matnyttiga tillägg till Apple Mail, såsom ex.v.:
Select all messages you want to use for creating the mailing list (for creating a mailing list, you would choose all messages in a mailbox which contains all messages on a certain topic).
Run the script and you get a list with all addresses contained in the selected messages - mark all the addresses you want to add to the Address Book using the checkboxes.
From the popup menu, choose which group you want to update with the selected addresses or select "Create new Group..." and enter the name for the new group to be created.
The script checks whether an address is already present before adding it to the Address Book in order to avoid duplicate entries. If additional information is available for an entry already present in the Address Book (e.g., full name information for an entry which had prior been email-only), the entry will be updated.