This idea has been merged into another idea. To comment or vote on this idea, please visit IDEAMLCT-I-21 Ability to have a disclosure for incoming Internet email.
An external mail might contain some harmful contents like attachments, links etc. So administrator wants to warn users while opening an external mail. Currently when the users are opening an external mail, there is no option to set any warning. So there is an Enhancement Request to provide the feature for setting warning while users are opening any external mail. The text should be customizable.