Message, file, and app limits on the free version of Slack

You can use the free version of Slack for as long as you'd like, but there are a few usage limits to consider:

  • Only the most recent 10,000 messages can be viewed and searched.
  • If a workspace passes the 5GB file storage limit, Slack will archive older files as new ones are uploaded.
  • Your workspace can support up to 10 third-party or custom apps.

Tip: Upgrading to a paid plan will remove message and app limits, and increase your workspace's file storage limit


Message visibility limit

Members can send unlimited messages in Slack, but only the most recent 10,000 can be searched and viewed in your workspace. Keep in mind that deleted messages don't count towards this limit.

If your workspace exceeds the message visibility limit, that's okay! Members can continue to send messages, but older messages will be archived. If you upgrade your workspace to a paid plan, all archived messages will become available again.

What counts as a message

Anything typed into the message field and sent to a channel or direct message counts as a message. A one-word message (or even a single emoji) is counted the same as a message with 500 words and multiple paragraphs.

Links, snippets, posts, uploaded files, replies in a thread, messages in archived channels, and messages from bot users all count towards your workspace's total number of messages sent.


File storage limit

On Slack's free version, workspaces have up to 5GB of file storage available. Anything uploaded to a channel or a direct message (e.g., PDFs, documents, images, screenshots, audio and video files) counts towards this limit.

If your workspace reaches the limit, members can continue to upload files, but Slack will start archiving the oldest files to make room for new ones. Members won't be able to view archived files in channels, direct messages, or search results.

Like messages, archived files will immediately become available again if you upgrade to a paid planAfter upgrading, file storage limits are determined by the total number of members (including Multi-Channel Guests) in your workspace:

  • 10GB per member on the Standard plan
  • 20GB per member on the Plus plan 

Note: Deleted files and files shared via apps (like Google Drive, Dropbox, etc.) do not count towards the file storage limit.