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Slack can be used for as long as you'd like on the Free plan, but here are some things to keep in mind:
Message visibility limit — Only the most recent 10,000 messages will be viewable and searchable.
File storage limit — Workspaces on the Free plan share a total of 5GB of file storage space.
Members can add up to 10 third-party or custom integrations.
All members except Guests can upgrade to a paid plan, which would remove the message visibility, integrations, and file storage limits.
Message visibility limit
Members can send unlimited messages in Slack, but only the most recent 10,000 will be searchable and viewable.
If you exceed the message visibility limit for your workspace, that’s alright! You’re building a valuable record of knowledge, and you can continue to send messages. Older messages will be stored in your workspace's archives, ready if you decide to upgrade.
Upon upgrading, all of the messages in your workspace's archives are immediately available to search and view again.
📝 How messages are counted
Slack counts anything typed into the message field and sent as one message.
Sending a one-word message (even a single jumbomoji) is the same as sending a 975 word multi-paragraph message. Messages from bot users, URLs, snippets, posts, uploaded files, file comments, messages in archived channels, and message thread replies count towards your workspace's total number of messages sent.
File storage limit
Workspaces on the Free plan have a total of 5GB of file storage to share. Once the limit is reached, files will remain accessible in Slack but you won't be able to upload any more. You can delete shared files to make room for new ones or upgrade to a paid plan.
By upgrading, your workspace’s file storage limit increases for every member of the workspace, including Multi-Channel Guests:
Standard plan — 10GB for every member
Plus plan — 20GB for every member
Here's an example:
Let’s say there are 50 members on your workspace and you’ve decided to upgrade to the Standard plan. That means your members will have 500GB of file storage to use together. Go ahead, upload your PDF docs, pictures, audio and video clips and more! ✨
Note: For more information about Slack's plans, features, and pricing visit our Pricing Guide.
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