When a meeting request arrives in an attendee's Inbox, it displays a different isan from an e-mail message isan.

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The isan of a meeting request is different from the isan of an e-mail message because the meeting request is a separate object from the e-mail message. The meeting request is created when the sender sends the meeting invitation, and it contains information about the meeting, such as the time, date, and location. The e-mail message is simply the container for the meeting request.

When a Meeting Request Arrives in an Attendee's Inbox, It