Re: [Jmap] Proposal: split sharing mechanism from JMAP Calendars spec

Jim Fenton <> Tue, 15 December 2020 17:28 UTC

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From: "Jim Fenton" <>
To: "Neil Jenkins" <>
Cc: "IETF JMAP Mailing List" <>
Date: Tue, 15 Dec 2020 09:28:04 -0800
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Subject: Re: [Jmap] Proposal: split sharing mechanism from JMAP Calendars spec
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On 14 Dec 2020, at 22:01, Neil Jenkins wrote:

> Hi all,
> The JMAP Calendars draft-in-progress currently defines the 
> CalendarPrincipal and CalendarShareNotification data types under a 
> separate capability. Looking at it, I have come to the conclusion that 
> we should go a step further: drop "Calendar" from the names and split 
> them out into their own spec. These are really generic sharing 
> primitives that could then be referenced by the other specs — e.g. 
> calendars, tasks, mail sharing — to define how you share data of 
> types between entities within a system in a consistent way.
> Please reply with any comments, questions, objections, or agreement 
> with the proposal and I will write up a draft splitting out these data 
> types to propose for acceptance.

I definitely think that would be useful. For example, my wife and I 
would like to have a shared contact list.