Can't be done using .forward. Another poster has suggested how you *should* solve your problem. However, if you really do want to drop mail into a folder and have it then be forwarded onwards ... Depending on exactly how your mail is set up, a "folder" will either be a file or a directory. You need to write a program which will run periodically or will be triggered by the write to the file (which would really be a named pipe) to do the mail forwarding. Or use Plan 9, whose funky filesystem would seem to make this easy :-)