Is your feature request related to a problem? Please describe.
I need a fully-functional mailbox component (that is, actions like starring and read/unread will have an effect) with a display of only a specific list of threads.

Describe the solution you'd like
I have a list of Nylas threads and I just need to filter to those threads. I don't particularly care about the approach, but something like a "thread IDs" parameter that takes a list of thread IDs would be fantastic.

Describe alternatives you've considered
The current search capability lets you do advanced search, sure, but does not work with a list of IDs. Alternatively, I can pass in external data, but then I lose all functionality (read/unread, starring, etc).