There are tons of games you can play with email. If it isn't signed with PGP or S/MIME or DKIM someone on either side can make it look like something completely

There are tons of games you can play with email. If it isn't signed with PGP or S/MIME or DKIM someone on either side can make it look like something completely different than the original. A bad actor can claim their edited copy of your email is death threats.