How to search in a conversation in Slack on Mac: steps, shortcuts and fixes

Search one conversation with ⌘F

The fastest way to search inside a conversation is ⌘F. Open the channel or direct message first, and keep the Slack desktop app in front. Press ⌘F, then type the word or phrase you remember. Slack's help center says this searches only that conversation, from any channel or DM. Messages from every other channel stay out of the list.

Pick the right shortcut for the job

Three shortcuts cover most searches. Each one answers a different question. Use ⌘F when you know which conversation holds the message. Use ⌘K when you need to reach a conversation by name first. Use ⌘G when you have no idea where the message went.

Start narrow with ⌘F, then widen to ⌘G only if the conversation search comes back empty. That order saves time. A workspace search returns more results, so there is more to scan. Slack's keyboard shortcuts article lists both keys, and its navigation article gives ⌘K for opening a conversation.

Narrow results with search modifiers

Search modifiers are small words that filter your results. You type them into the search box, usually followed by a colon. Slack's search help article lists the modifiers below. It describes them for search in general, not for the conversation view specifically, so test each one before you depend on it.

• Quotation marks, like "launch date", match an exact phrase.
• A minus sign before a word leaves that word out of the results.
• from: limits results to messages from one person.
• in: limits results to one channel, coworker, or section.
• with: limits results to threads and DMs with one person.
• is:thread shows messages that sit in threads.
• is:saved shows saved items, and has:pin shows pinned ones.
• before:, after:, on:, and during: filter results by date.

Try a search such as "launch date" with a from: modifier. If the list is still long, add a date modifier. Keep the search term short. Each new filter removes results, so add them one at a time and check the list after each one.

Use the desktop search bar and Filters

Sometimes the conversation search is not enough. You want the whole workspace, with more control over the results. Click the search field at the top of Slack, then type your words. Watch the suggestions. Select one, or press Enter to see all results.

Then click Filters to refine the results. On desktop, click Messages, Files, People, Channels, or Canvases in the sidebar to switch between result types. Messages is the one you want for a conversation search.

Why a search comes back empty

An empty list usually has a simple cause. Check these before you decide the message is gone. Most of them take less than a minute to rule out.

• The wrong conversation is open. ⌘F only searches the channel or DM on screen.
• The message is inside a thread. Add is:thread to your search to find it.
• The term is misspelled or too long. Try one distinctive word instead of a sentence.
• The message is older than your plan keeps. Free plan search reaches back 90 days.
• The channel is excluded in Search options. Check that list in Preferences.

If none of those explain it, press ⌘G and search the whole workspace. A match in another channel tells you the message exists. It may simply live somewhere you did not expect. Open that result and check its location before you reply.

Make ⌘F work in Slack on the web

If you use Slack in a browser, the shortcut fights the browser. Slack has a setting that hands ⌘F back to Slack. Click your profile picture in the sidebar, select Preferences, choose Advanced, and find the Search options section.

Tick the box labeled Cmd F or Ctrl F starts a Slack search. That box only appears in the browser version. The desktop app does not need it, because ⌘F already starts a conversation search there.

Search options also let you exclude channels from search results. Check that list if a channel seems to be missing from your results.

A worked example: finding a decision in a busy channel

Say your team argued about a launch date in a channel two weeks ago, and you need the final call. Open that channel and press ⌘F. Type launch date with quotation marks, so Slack matches the phrase. If the list is long, add from: and the name of the person who usually makes the call.

If that still returns too many messages, add a date modifier such as after: or during:. Keep the search term short, and let the modifiers do the narrowing. Write the working search down, since you may need it again next week.

Search a DM on Mac

Direct messages work the same way. Open the DM with the person, then press ⌘F. The search covers that DM only. If you remember what someone told you but not where, search the workspace with ⌘G, then add with: and their name to limit the results to DMs with that person.

How far back search reaches on your plan

Search only finds messages that Slack still keeps. On the free plan, messages are saved and searchable for 90 days, according to Slack's pricing page. Upgrading gives access to the previous 12 months of messages.

Paid plans keep data for the lifetime of the workspace by default. Workspace admins can change retention. On the free plan, an admin can choose 90 days or one year. Data deleted under a retention setting is permanent, so ask your admin before you assume an old message is gone.

Slack's own blog says desk workers spend a third of their time on low-value tasks, such as searching for information. That figure covers low-value work in general, not Slack search alone. The blog does not give its sample size, so treat it as context, not a measurement of your team.

Mistakes people make

• Pressing ⌘F with a browser in front, then blaming Slack. Check which window is active first.
• Opening the wrong channel, then searching it. ⌘F only searches the conversation you have open.
• Typing a whole sentence. Shorter terms match more messages, and modifiers can narrow them.
• Starting with ⌘G. A workspace search returns more results, so it takes longer to scan.
• Giving up on an old message too early. Check the plan and the retention setting first.

What to do next

Start with ⌘F in the conversation you already know. If it comes back empty, widen to ⌘G. Then add a from: or date modifier to cut the list down. Write down the search terms that worked, since you will reuse them.

If you spend much of the day in Slack, the Slack assistant page covers the Slack assistant for Mac. Lazur can point at the search field or walk you through a setting. It does not run the search for you.