Sounds good, and it can extend to the bots in other messaging apps (e.g. Facebook Messenger, Kik).
The feature really depends on having an API for the common actions you mentioned, like inserting a list or viewing a list. Maybe we should open a separate thread for API.
Also I’m not sure if the timing is right. Personally I’ve never really used bots except for playing with Cleverbot (that probably doesn’t count here 
); is now or soon a good time for this feature? I guess what I’m trying to say is that while bots are novel and cool and shiny, I don’t perceive it to be nearly as mainstream as Email (relevant post: Send email to add items to Dynalist). Correct me if I’m wrong! I have no idea how popular bots are right now.