Maybe there’s already a way to do this?
When messaging the same person, particularly if there is a back and forth, all of the messages appear as separate entities and must be viewed by switching from Inbox view to Sent view.
By the time a considerable back and forth has been established, this can amount to many messages and can quickly become confusing, particularly if speaking to multiple people at once.
If all messages to a single person are grouped into a single thread, this would help greatly with following a conversation and also would help keep the message boxes tidy.
Happy to help with this if necessary.