Re: Using Message-ID as unique file name?

>  > Is it safe(possible) to use  Message-ID as unique file name
>  > for later reference?
>  > Or does it incur problems due to meta characters which might be
>  > included in ID?
>
> I don't think I've seen Message-Id:s with slashes in them, which is
> the only disallowed file name character in Unix file names. Per
> definition, the Message-Id is supposed to be unique. So yes, you could
Though spammers like to make fake message IDs.  Some leave them blank.