Hi Clinton,

I haven't had a chance to read your draft yet, but are you familiar with
https://datatracker.ietf.org/doc/draft-ietf-mailmaint-oauth-public/


On 7/20/25 12:27 AM, Clinton Bunch wrote:
I submitted https://datatracker.ietf.org/doc/draft-bunch-groupware-scopes/

This is a proposal of standard OAUTH2 scopes to support the loosely coupled world of mail, calendaring, and contacts servers and clients.

The current state is that every Authorization Server defines their own scopes for these groupware services, leading client developers to hard code these scopes, which, in practicality, limits them to supporting OAUTH2 authentication for only a dozen or so providers big enough to strong arm them into it.

This is the remaining barrier to wide spread deployment of OAUTH2 authentication for groupware services.  The other half of the problem, Client Registration, is solved by RFC 7591, OAuth 2.0 Dynamic Client Registration Protocol.

With these two pieces in place, Authorization Servers and clients can begin to implement this advanced authorization process.


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