make a different tab just for pinned messages. it only works if you have 2 ou 3 pinned.

if you have more than 10, it gets so anoying to have to scroll down to get to the other messages that you're having in the moment, that are not pinned.

(it wouldnt be needed if ''unread messages actually worked, but it doesnt... it is happening everytime that you open a message and theres an error and you have to close the app. then it isnt unread anymore... you have to search for that message to give an answer to the person and there you go scrollling down the list of messages indefinitely until you find what you're looking for... I usually get bored and just quit using the app for the day)