Secret Slack Features You Didn't Know Existed

Slack is built to move fast, but most people only use the basics — channels, threads, and pings. The features that actually save time are the quiet ones sitting in the background. Here's what you're missing.

Stay Informed Without Watching Every Channel

The biggest Slack time sink is feeling like you need to monitor everything. These features fix that.

Custom keyword alerts let you set triggers for specific words or phrases — client names, project codes, technical terms. Slack flags any message that includes them, so you stay informed without being tagged. Do Not Disturb mode works the other way: when you're heads-down, it pauses all notifications and signals to teammates that you're unavailable. And if a channel is noisy but useful, just mute it — you keep access and searchability without the constant pings.

Work Smarter with Messaging Tools

A handful of built-in tools make messaging more deliberate and less reactive.

Schedule messages to send at a future time — useful if you're working late and don't want to ping someone off-hours, or if you want something to land first thing in the morning. The /remind command lets you set nudges for yourself, a teammate, or an entire channel in plain language: "/remind me to submit the report at 4pm." Message reminders take it one step further — click the three-dot menu on any message and set a reminder for later today, tomorrow, or next week, without leaving Slack.

Need to move a message to another device? Forward it to yourself via "More actions → Send to myself." Faster than copying text or emailing a link.

Keep Your Workspace Clean and Navigable

A cluttered Slack is a slow Slack. These features bring order without much effort.

Custom sidebar sections let you drag channels into labeled groups — by project, team, or urgency. Pin messages in any channel so key links, rules, or schedules stay visible to everyone. Use /collapse to hide image and GIF previews in busy threads (and /expand to bring them back). Switch to compact theme under Preferences → Messages & Media to fit more messages on screen — especially useful on laptops or fast-moving threads.

For personal organization, save or star messages to create a private collection of tasks, links, and things to revisit.

Automate the Repetitive Stuff

The less time you spend on routine asks, the more time you have for actual work.

Workflow Builder requires no code. Use it to automate check-ins, collect information with simple forms, or trigger status updates. Custom Slackbot responses let you program automatic replies to common questions — type "vacation policy" and Slackbot responds instantly. Ideal for HR, support, and onboarding teams. Set default channels for new hires so everyone automatically joins the right spaces on day one.

Underrated Features Worth Trying

A few tools that don't fit neatly into a category but are genuinely useful:

Email forwarding into Slack — every workspace has a unique forwarding address. Use it to pipe meeting invites, approvals, or third-party notifications directly into a channel. Slack Canvas is a built-in doc tool for meeting notes, checklists, and onboarding guides — no switching to Notion or Google Docs. Huddles now support screen drawing and live emoji reactions, making quick informal calls more useful than ever. And advanced search modifiers — from:@alex, in:#design, has:link — let you find anything fast without digging through threads.

Emoji reactions are also worth using more deliberately: a ✅ works as a read receipt, and assigning reactions to answer options turns any message into a quick poll.

For Admins: Chronicle

These features help any individual or team. But if you're managing an entire workspace, you need more visibility than Slack provides by default. Chronicle is a tool built for Slack admins. It monitors sensitive content, tracks workspace events, and identifies inactive channels. It flags things like app installs, deleted messages, and custom keywords. You also get daily, weekly, or monthly reports delivered right into Slack. Everything stays visible without adding noise. It works behind the scenes so your workspace stays clean, safe, and easy to manage.