Bruce Baugh writes:

And as long as I'm asking questions :-), I see that some remailers (hfinney@shell.portal.com, hal@alumni.caltech.edu, homer@rahul.net) preserve subject lines while others do not. Is this a readily settable option? If so, I'd like to commend it to other remailer operators. If not, I'd be interested in getting some sense of how difficult a hack it is.

(Raph has authoritatively covered the space of deployed options already.) Writing code to keep or drop particular headers is trivial. Getting everyone who runs a remailer to deploy that code tends to be much harder. -Lewis "You're always disappointed, nothing seems to keep you high -- drive your bargains, push your papers, win your medals, fuck your strangers; don't it leave you on the empty side ?" (Joni Mitchell, 1972)