The fastest way to cut Slack noise is to stop letting Slack decide what interrupts you. Change your default alerts to direct messages, mentions and keywords only, mute the channels you don’t need to follow closely, and use Do Not Disturb for focus time. Add a few team habits on top (below) and most “Slack overload” disappears. Here are 15 settings and habits to work through this week, starting with the ones that matter most.
Part 1: Notification settings that cut noise (tips 1 to 6)
1. Set your default to “Direct messages, mentions & keywords”
Open your profile picture, choose Preferences, then Notifications. Under “Notify me about,” you’ll see three choices: all new messages, direct messages, mentions and keywords, or nothing. One of the guides we reviewed calls the middle option the “Goldilocks zone” for most people. “All new messages” is a fast route to information overload, and “nothing” risks missing things that matter.
2. Know what Slack alerts you about by default
Out of the box, Slack tends to notify you about direct messages and @mentions of your name. Other triggers you can switch on include an @everyone mention in a channel, your chosen keywords, and Slackbot reminders. Knowing the full list helps you decide what to switch off, not just what to switch on.
3. Override notifications channel by channel
Your global setting is only the default. Right-click a channel name (or tap it on mobile), choose “Change notifications,” and set a rule for that channel. For example, you might alert on every message in an announcements channel but mute a social channel entirely. Slack’s own help page covers this under managing notifications for specific channels and direct messages.
4. Mute channels instead of leaving them
You can keep a channel in your sidebar and silence it. That way you can still check it when you have time, without it competing for your attention. Muting is usually the better first move than leaving, because you can reverse it in seconds.
5. Use keyword alerts, but sparingly
Keywords let Slack tell you when a specific term appears, such as a project name or a client. They work well when you pick a handful of important terms. A long keyword list quietly recreates the noise you were trying to remove, so review the list now and then.
6. Use Do Not Disturb and a notification schedule
Do Not Disturb (DND) pauses notifications when you need to focus. You can switch it on manually by pausing notifications from your profile menu, or set a notification schedule in Preferences so Slack holds alerts outside your working hours and delivers them when your next active period starts. This is the simplest way to protect evenings and deep-work blocks.
Part 2: Device and badge settings (tips 7 to 9)
7. Choose the right notification type for each situation
Slack can alert you through badges (a dot or a number on the icon), desktop pop-ups, mobile push alerts, and email. A dot signals general unread activity, while a number in a red circle means something is aimed at you, such as a direct message or a mention. Decide which types you actually want: many people keep badges on, trim desktop pop-ups, and rely on email only when they’re away for long stretches.
8. Tame your sound and banner settings
Under Notifications, scroll to the sound and appearance options. You can pick a notification sound, turn banner pop-ups on or off, and decide whether message previews show. Turning off previews is a small change that also keeps sensitive messages from flashing on a shared screen.
9. Check your device permissions if alerts go missing
If notifications seem broken, the cause is often outside Slack. Slack settings, your operating system and your phone each have their own switches, and one wrong toggle can block alerts silently. If you’re a Windows user, confirm the system allows Slack to send notifications, and check that Do Not Disturb isn’t on by accident.
Part 3: Tidy up how Slack looks and searches (tips 10 and 11)
10. Customize your sidebar and message display
In your settings you can change the look and feel of how messages appear, what shows in the sidebar, and the theme. A cleaner sidebar means fewer visual prompts pulling you into conversations you don’t need. It’s worth ten minutes once, then you can leave it alone.
11. Exclude channels from search
By default, Slack searches across all your channels when you type a keyword. You can exclude certain channels so search results stay relevant. You can also choose how read and unread status behaves, so reading something doesn’t always clear it if you want to come back to it later.
Part 4: Team habits that reduce noise (tips 12 to 15)
Settings only fix your side of the problem. These habits fix it for everyone. None of them require a tool; they just need your team to agree.
12. Give every channel one clear purpose
A channel with a vague purpose becomes a dumping ground. Name channels by project, team or topic, and write a short purpose and topic line so newcomers know what belongs. When a channel’s job is clear, people know whether to follow it closely or mute it.
13. Use threads for replies
Replying in a thread keeps one conversation in one place and stops the main channel filling with side chatter. It also means people who aren’t involved can ignore the thread without missing the channel. Make “reply in thread” a team default.
14. Mention people, not everyone
An @everyone mention can trigger an alert for every member of a channel. Reserve it for things that genuinely apply to all, and use a specific @name when a message is for one person. This single habit prevents a lot of unnecessary interruptions.
15. Agree on response expectations
Slack feels urgent even when it isn’t. Agree as a team that messages don’t need an instant reply, and that truly urgent things get a direct message or a call. Pair this with notification schedules, and people can respond on their own time without guilt.
Habits only help if they stick. Our post on building a daily learning habit and our course The Science of Successful Habits: Build, Sustain, and Thrive both use the same idea you can apply to your team’s Slack rules: break the change into small, repeatable steps instead of attempting a big overhaul. If your team also works in Microsoft tools, Unlocking Microsoft Office 365: Your Guide to Productivity and Collaboration covers another collaboration setup worth tidying the same way.
A quick setup table
| Situation | Suggested setting |
|---|---|
| General default | Direct messages, mentions & keywords |
| Important announcements channel | Notify on every message |
| Social or low-priority channel | Mute, keep in sidebar |
| Deep-work block | Do Not Disturb |
| After hours | Notification schedule |
| Project you must not miss | One or two keyword alerts |
Features, menu names and options change over time, so if a setting looks different on your screen, check Slack’s current help pages.
Frequently asked questions
What are some good Slack tips for teams?
Start with notifications: set the default to direct messages, mentions and keywords, mute low-value channels, and use Do Not Disturb for focus time. Then add team habits like clear channel purposes, replying in threads and using @everyone sparingly.
How can I be more productive in Slack?
Limit what is allowed to interrupt you, and check Slack at set times instead of constantly. Use a notification schedule so alerts pause outside working hours, and keep keyword alerts to a short list of terms that truly matter.
How do I organize Slack channels for a team?
Give each channel one clear job, name it by project, team or topic, and fill in the purpose and topic lines so people know what belongs there. Encourage people to mute channels they only need to skim rather than leave them entirely.
What is proper Slack etiquette for teams?
Reply in threads, mention specific people instead of everyone, and don’t expect instant answers to everyday messages. Agree on how to flag something urgent, such as a direct message or call, so the rest of the channel stays calm.
How do I reduce Slack notification overload?
Switch from “all new messages” to direct messages, mentions and keywords, then mute noisy channels and set a notification schedule. If alerts still feel excessive, review your keyword list and your badge, banner and email settings one at a time.
Sources
- Manage notifications for specific channels and direct messages (Slack Help)
- How to Manage Slack Notifications (Dummies)
- Slack Notification Settings: Setup Guide 2026 (BuddiesHR)
- Slack Notifications: Setup & Troubleshooting (flat.social)
Ready to go beyond notifications? Our course The Ultimate Slack Playbook: Unlocking Team Potential with Slack walks through the workspace, settings and team features step by step. You can try it with the 7-day free trial; see the AdCoach pricing page for details.