Those things don't do a darn thing. I've Googled it extensively and the only justification I can find is: "Why NOT include it? It does no harm and it might help

Those things don't do a darn thing. I've Googled it extensively and the only justification I can find is: "Why NOT include it? It does no harm and it might help." I'm yet to find a single legal case where an email signature made or broke the case. It strikes me more as legal mumbo jumbo voodoo at this point than anything of merit. Not least of all as a contract is between two parties, the recipient cannot be auto-magically placed into a contractual position just by receiving the email. That would be like me sending a snail mail letter to someone with the words "By reading this mail you agree that all your stuff is now mine" and pretending like any court in the world (any country) would take that "contract" seriously. That's essentially what these signatures do. Try to set up a contractual arrangement with one party "agreeing" to that arrangement just through the virtue of receiving an email?