Extract from email address from .eml file

Hallo everybody.
I am trying to set a rule to rename Apple Mail mail's dragged to the desktop accordin to the following syntax:
yyyymmdd - sendermail.eml
I managed to make Hazel extract the date of the email, but cannot do anything good with the sender's mail.
Any hint?
Thank you very much.
Tiziano
I am trying to set a rule to rename Apple Mail mail's dragged to the desktop accordin to the following syntax:
yyyymmdd - sendermail.eml
I managed to make Hazel extract the date of the email, but cannot do anything good with the sender's mail.
Any hint?
Thank you very much.
Tiziano