Parameter Name
RSVP
Purpose
To specify whether there is an expectation of a favor of a reply from the calendar user specified by the property value.
Format Definition
This property parameter is defined by the following notation:
rsvpparam = "RSVP" "=" ("TRUE" / "FALSE") ; Default is FALSE
Description
This parameter can be specified on properties with a CAL-ADDRESS value type. The parameter identifies the expectation of a reply from the calendar user specified by the property value. This parameter is used by the "Organizer" to request a participation status reply from an "Attendee" of a group-scheduled event or to-do. If not specified on a property that allows this parameter, the default value is FALSE.
Example:
ATTENDEE;RSVP=TRUE:mailto:jsmith@example.com