Be Safe When Sending Jokes or Sarcastic E-Mail
Sending jokes or sarcastic e-mail to people you are not too familiar with could create unpleasantness, when the other person is offended by or misunderstands your jokes or sarcasm. In general, avoid sending such e-mail to people you do not know very well.
Use your address book. It is there for a reason! Create a group and add only people you know very well to this group. If you really have that urge to forward or send a joke to a friend, just send them to this group alone.