JSON-LD format for structured vacation notices / out-of-office

[hhappel]

Initial suggestion from https://datatracker.ietf.org/doc/draft-happel-sml-structured-vacation-notices/

  {
           "@context": "https://schema.org",
           "@type": "OutOfOffice",
           "start": "2023-08-15",
           "end": "2023-08-22",
           "isForwarded": false,
           "replacement": [
               {
                   "@type": "OutOfOfficeReplacement",
                   "name": "John Doe",
                   "topic": "Project A",
                   "email": "john@doe.com",
                   "phone": "+1234567890"
               },
               {
                   "@type": "OutOfOfficeReplacement",
                   "name": "Jane Doe",
                   "topic": "Project B",
                   "email": "jane@doe.com",
                   "phone": "+9876543210"
               }
           ],
           "note": "Some text"
   }

Note: This is a preliminary specification only. Do not use in practice.

Open issues:

• Part of Schema.org vocabulary or rather specific email-related vocabulary?

[hhappel]

Further open issues (partially from discussion at IETF 119):

• Some systems (e.g., Exchange) allow to set OOF times (TODO: check further systems; Sieve; similarly, consider time zones)
• Replacement might be persons (probably also vCard or URL?) or other entities (mailing list)
• Need to distinguish if this is an internal or external OutOfOffice note (which some systems allow)?
• Allow adding additional related structured data ("I am off to attend IETF 119" - add IETF 119 as iCalendar or Schema.org event)