Specify the actions that you want to prompt a warnings.
Specify whether to prompt a confirmation dialog before permanently remove the deleted messages from folders.
Specify whether to prompt the user when he or she tries to send a message without a Subject.
Specify whether to prompt when user tries to send out a HTML mail, for the recipients may not want to receive HTML mail.
Specify whether to prompt when user tries to send a message with no To or Cc recipients.