Hi Håkan. Thanks for sharing your idea. It is today possible to communicate with external, non-Projectplace users either by using the Contacts list in members (one-way communication only) or via the Issues tool and we are looking at either moving this ability to boards and closing down Issues or further develop the Issues tool a bit further down the line.

For now, we leave your idea open for voting and commenting by other users and we will keep you posted on the progress.