What is the rebus for mail invitation?

A rebus for "mail invitation" could be represented by an image of an envelope (to signify "mail") followed by a picture of a person gesturing or holding up a hand (to represent "invitation"). Alternatively, it can be illustrated with the Word "mail" and an icon of a party hat or a gathering, indicating the festive nature of an invitation. This visual representation combines both components to convey the message effectively.