Try out our new RRULE tool for creating RRULE compatible strings.

Parameter Name



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


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.



This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at .  The original text document should be referred to if there are any errors or discrepancies found in this document.

Need to test your iCalendar feeds?

The iCalendar Validator provides developers and testers a method to validate their iCalendar feeds, which can take data from either a URL, file or text snippet and compare it against the RFC 5545 specification.  We believe we have one of the best iCalendar validation tools available on the internet. More information about the validator can be found here.