This idea was fairly popular a few years ago but has mostly been dropped since other methods that aren't so annoying for non-spammers do a pretty good job.
But some people are still working on them, e.g. http://tmda.sourceforge.net/cgi-bin/moin.cgi/FrontPage On Thu, Apr 9, 2009 at 1:35 PM, Jessie Morris <[email protected]> wrote: > I was wondering if there was any way that I could make my mail system respond > to emails received with a link that says something to the effect of, "If > you're > a human, click here to be allowed." I've done some searching on Google, and > haven't found a really good system. Ideas? > > -- > > Jessie Morris > > > > > /* > PLUG: http://plug.org, #utah on irc.freenode.net > Unsubscribe: http://plug.org/mailman/options/plug > Don't fear the penguin. > */ > /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
