Tip 1 for #MeaningfulActiveUsage of Microsoft Teams:

Use at-mentions to help teammates keep on top of conversations in Teams.

Most of us think of at-mentions from our own point of view. An at-mention enables me to bring a person into a Teams conversation as I type my post or reply. But an at-mention also benefits the person being mentioned in Microsoft Teams. It means the conversation appears in the Activity Feed - the Inbox for Teams. It is easier to keep up with important conversations when they are referenced in one location.

An at-mention can be used to address an individual, people following the activity in a channel, members of a tag, or the whole team. When posting a message in a team, think about who you are addressing, be an individual or a group of people. Use the appropriate at-mention. It’s the same as when you address an email. You add the addresses of the people or groups you want to read the message.

What happens when someone posts an important message in a channel but doesn’t use an at-mention? The post sits in the channel till someone happens to open the channel and read the message. It may not be seen by other team members for hours, days or weeks. If it is a busy channel, the message will be pushed further up the feed as more people create new conversations and respond to other conversations. The burden is on the team to keep up with those messages. I’ve heard remarks from people saying that they have to visit each of their teams and channels multiple times a day to check if there has been anything important posted.
If at-mentions were used to address individuals and groups appropriately, they would see the messages in their Activity Feed.

Use at-mentions. Understand when to use different at-mentions. Make it easier for team members to read your conversations and replies from the Activity Feed.

Read more #MeaningfulActiveUsage tips for Microsoft Teams in my article for AvePoint “8 Tips for Driving Meaningful Microsoft Teams Adoption.”

Related support article from support.microsoft.com - “Use @mentions to get someone’s attention in Teams”