Threads are great for discussions and project collaboration in a team (public) channel. Members can ask for clarification or share ideas freely without tripping the unread indicator for everyone else in the channel 🎉.

• Threads let you respond directly to a message in a channel, keeping the replies, images, and other files organised neatly in a single, threaded conversation. Use them by default.
• Threads help us keep up. Slack throws a huge volume of text at us every day. An endless group chat stream is much harder to keep up with than threads that are nicely organised by topic. If you don't care about a topic, you can skip the entire thread and move on to something more relevant.
• Threads help the entire team catch up. With teammates working all over europe, we're often starting our day by catching up on what we missed in Slack. It's much easier to get a sense of what we missed when topics are organised into threads.
• Threads are more searchable. When you search Slack for a question, it's much easier to find the answer when the discussion is neatly bundled in a thread.
• Threads are most important in busy channels. If a channel is small and not very active, threads probably don't make a huge difference. But for large, active channels, threads are an important way to stay organised.
• Once you contribute to a thread, you'll be notified of any replies. You can also click "More actions" on a thread and choose "Follow thread" to be notified. Likewise, you can select "Unfollow thread" to remove notifications.