FAX Storage PROBLEM

Hi Guys,

I would like to know how to store fax received from different people using Digium Fax for asterisk. Indeed, what I see, any fax received is stored in /home/username/faxin directory in .tiff format always with the same name : rx-faxin.tif which can be arased when receiving another fax.
With digium fax for asterisk, how to save several fax in the same /home/username/faxin directory to avoid to have them erased. What script I can use for fax notification by email, as soon as a fax is received.

Thanks for your help.

Tiloulou