I'm trying to setup a form of email piping in SharePoint online for my helpdesk ticket system (custom list).
i.e. if a user replies to an email from my workflow to advise a ticket has been raised, I would like the contents of the reply email to be appended to the comments of the list item.
I'm expecting that the subject line of the email contains the unique identifier. i.e. ServiceRef:[ID] (where ID is the list item number i.e. ticket number).
I've started creating a flow, when a new email arrives and using an action of update item but my first issue is that I don't know how to define my list ID as there doesn't appear to be any dynamic content to choose the list ID number from.
My second issue is that the update item action doesn't have any comments fields.
I'm still quite new to flow so perhaps i've missed something or perhaps not possible with comments?