Hey there! Let me break down exactly how to check who's part of a Teams channel, plus clarify which users get reached when you do things like @mention the channel or schedule a meeting within it.

Viewing a Channel's Member List #

The steps vary a bit between desktop and mobile, but here's how to do it on both:

Desktop App #

• Open the Teams team that contains your target channel, then navigate to the channel itself.
• Click the three-dot menu (⋮) at the top right of the channel header, then select Manage channel.
• In the panel that pops up, switch to the Members tab. Here you’ll see all users in the channel.

  Note: For standard (public) channels, this list matches the entire team’s member list. For private channels, you’ll only see users explicitly added to that channel (they’re usually part of the full team, but not always).

Mobile App #

• Launch Teams, open the relevant team, and tap into the channel you want to check.
• Tap the arrow next to the channel name at the top of the screen, then select View channel info.
• Scroll down to find the Members section—tap it to see the full list of channel members.

Confirming Who Gets Reached by Channel Actions #

When you @mention a channel, schedule a meeting linked to the channel, or post announcements targeting the channel, here’s who will be affected:

• All members listed in the channel’s member list: This is the core group. By default, they’ll get notifications for these actions unless they’ve adjusted their personal notification settings.
• Key exceptions to note:
  • If a user has manually set their notification preference for the channel to Ignore (via the channel’s three-dot menu > Channel notifications), they won’t receive alerts for these actions—even though they’re still a channel member.
  • For private channels, only the private channel’s members will be reached, not the entire team’s members.
  • If you use @team instead of @channel, that will notify every member of the entire team, not just the channel you’re in—so be careful with that distinction!

Unfortunately, there’s no built-in way to see which specific users have muted or ignored channel notifications. But you can be confident that the intended reach is all users in the channel’s member list, minus anyone who’s opted out of notifications on their end.

内容的提问来源于stack exchange，提问作者JoeGaggler