Keep Replies in a Thread in Slack and Teams Without Hiding the Answer
A thread keeps one discussion in one place, so the main channel stays readable. The cost is that people who are not following it can miss the answer. This guide covers how replies in a thread work in Slack and Teams according to their help pages, how to follow a thread, and a simple habit for making sure the outcome reaches the people who need it.
Miles Crawford
How replies in a thread work in Slack
Slack's help says threads let you discuss a topic in more detail without adding clutter to a channel or direct message. To reply, hover over the message, click the Reply in thread icon and type your reply. On mobile, tap the message and tap Reply in Thread.
Below the reply box there is a checkbox that sends your reply back to the main view of the channel or DM as well. Slack also says you can do this after sending: open the three dots menu on the thread reply and choose Send reply to this channel.
On notifications, Slack says that in one-to-one DMs you are notified of new replies to all threads by default. In channels, or in DMs with several people, you are notified if you started the thread, replied to it, or were mentioned. You can switch replies on or off for a single thread from its three dots menu. In a channel's notification settings you can also choose to be notified about all replies and show them in your Threads view.
How replies in a thread work in Teams
Microsoft says replies to a channel message stay attached to the original message, so anyone can follow the whole conversation. How you reply depends on the channel layout. In a posts layout channel you select the Reply link below the message. In a threads layout channel you hover over the message, select Reply in thread, and the thread opens in a side panel. Above the compose box a dropdown lets you reply to the thread only, or to the thread and the channel.
Teams follows threads automatically if you started the thread, replied in it, or were @mentioned in it. You can also follow one by hand from the More options menu on a message. Followed threads appear in one place at the top of your list of chats and channels, with unread replies in bold. In your settings you can choose which kinds of threads you follow automatically.
A habit: answer in the thread, announce the outcome
This is our suggestion, not a rule from either product. A thread is good for the back and forth. It is a poor place for the final answer if other people need it.
- Ask with context. Put the whole question in the first message, so a reader does not have to open the thread to understand it.
- Keep the discussion in the thread. Side questions, options and corrections belong there.
- Close it with one summary. When it is settled, write one reply that states the outcome and who does what next.
- Send that summary to the channel. Use the send-back option in Slack, or the thread and channel option in Teams, only for this summary and not for every reply.
- Mark it done. A reaction such as ✅ on the first message tells people the thread has an answer. Our reactions guide covers using reactions so follow-ups do not get lost.
If the outcome is a decision people will need later, pin it as well.
When not to use a thread
- Anything urgent for a wide audience. Slack says group mentions such as @channel and @here do not notify anyone when used in a thread. Post in the channel instead. Our mentions guide has the details.
- Announcements. If everyone should see it, post it in the main view.
- Sensitive or personal topics. A thread in a channel is still visible to everyone who can see the channel. Use a direct message or the channel your organization designates for that topic, and follow your workplace's rules for confidential information.
- Time-critical incidents and safety issues. Do not rely on someone noticing a thread reply. Use your organization's emergency or on-call process.
Sources
Checked October 16, 2026. The descriptions of replies, notifications and following follow each product's own help articles. The habit and the list of cases to avoid are our suggestions.