2.2.88 [RFC5545] Section Action


The specification states that non-standard property parameters can be specified on the ACTION property.

Microsoft Office Outlook 2007, Microsoft Outlook 2010, Microsoft Outlook 2013, Microsoft Outlook 2016, Microsoft Outlook 2019

Outlook does not export any parameters on the ACTION property. All instances of the ACTION property are ignored on import.


The specification states that the ACTION property MUST be specified once in a VALARM component.

Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019

Outlook ignores the ACTION property on import.