[JMAP] Re: Feedback on draft-ietf-jmap-filenode-01

[Neil Jenkins <[e-mail]>]

On Sat, 4 Oct 2025, at 01:16, Mauro De Gennaro wrote:
> - Sharable data types and isSubscribed: According to RFC 9670, a JMAP sharable data type MUST define the myRights, shareWith, and isSubscribed properties. However, I’m not sure isSubscribed makes much sense in the context of file storage. I’d like to hear your thoughts (and Neil’s too) on this.

I think it probably still makes sense — as the shared spec says, `myRights`/`shareWith` is whether you have permission to see it, `isSubscribed` is whether you want to see it! (i.e., The former is controlled by the person sharing the latter by the person it is shared with.) What's interesting here is the hierarchical nature of it — if you share a folder, you implicitly get permission to everything underneath it. I think the `isSubscribed` mostly only makes sense on whatever the top-level item shared with you is, or at least it doesn't make much sense to set `isSubscribed` to `false` in a folder that has an ancestor with it set to `true`. On the other hand, this is probably not going to hurt either, so possibly not worth worrying about and we can keep it consistent with the other JMAP APIs.

Cheers,
Neil.