Developer website: Andreas Amann
This is especially useful if you are subscribed to a mailing list in digest format but want to reply to a single message in the digest rather than the digest message itself.
The individual messages will be moved to the same mailbox as the original digest message and the temporary Import folder will be deleted (note that the root "Import" folder currently cannot be deleted due to a bug in Mail's AppleScript implementation). When running the script for the first time, the user can choose whether or not to delete the digest message upon successful extraction of the individual messages.
*Previously available here