Grabbing Attention with Direct Messages and Mentions

You can mention a user in a channel or chatter by typing @user-name. Mentioning a user in the chatter will set them as a follower of the item (if they are not already) and send a message to their inbox. The item containing the mention will also be bolded in the list view. Mentioning a user in a channel will send a message to their inbox. You cannot mention a user in a channel who is not subscribed to the channel. Typing #channel-name will provide a link to the mentioned channel in either a chatter or another channel.