This program will ask you if you want to save the attachment. Just answer yes and the attachment will be saved as a file for you to deal with as appropriate. The name under which the file will be saved will also be shown. You can safely get rid of foo.mail after you save the document successfully. One problem that can arise with attachments is that the encoding process actually makes the file bigger.
Most mail programs have a limit on the size of a mail message they'll accept.
7.4 Mail forwarding You can have your mail forwarded elsewhere by using a .forward file. Typically, one would use an editor to do this, but the following snippet at the shell prompt will do nicely. Of course, when userid joe returns to reality from his vacation, he should just remove the .forward file for the forwarding to cease. A note of caution. As you accumulate computer accounts elsewhere, this is a trap that even experienced users fall into.