I don't think there is something about email but what I can share is what I used to do:
a "trouble request" is created
each ticket has a list of activities
activities can be tasks for an technician, internal or external communication (email, slack message, log message, whatever source of data).
each email would have the ticket number in the subject field and also in the email body.
this is to say that the trouble ticket entity itself has zero information related to emails.
TMF621 resource model doesn't seem to have activity sub-resources, so I don't know how you would track all communications, tasks, actions etc for each trouble ticket.
notes doesn't sound like a scalable and flexible solution.
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Kind regards,
Matthieu Hattab
Digital Sales Domain Architect
Lyse Tele AS
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