This feature is on the backlog. I will update you when we have more details to share.
An error occurred while saving the commentDuncan commented
Could be a hashtag, but might work better with pre-set "tags" or "categories", (This gets round the issue of various different hashtags actually referring to the same thing eg #project vs #project_1 which likely refer to the same thing but are different hashtags).
So you could eg set up a "category" for Project 1 for user to 'tag' messages, and then have this easily searchable
Thank you for your feedback. The team has this item under review. We will share an update as soon as one is available.