We have a lot inhouse people and guests in our Asana projects. Basically every private project has own project group defined.
every now and then you are writing a message to task and tag/mention someone by @name, you may tag incorrect person (similar name, but different person). In this case the incorrect person will get a notification that someone has tagged/mentioned them, but have nothing to do in project or task the message is about.
Could there be a feature that checks if the tagged person is part of private project group → and if not, would ask confirmation to send the message, example: You are mentioning people from outside of this project and they will be informed. Should we send the message and add @name as follower? …or something like that.