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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 searchable and viewable.
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 your workspace exceeds the message visibility limit, that’s alright! You’re building a valuable record of knowledge, and you can continue sending messages. The oldest messages will be stored safely in your workspace's archives, ready for you upon upgrading.
Any member can upgrade to a paid plan and make all of the messages in your workspace's collective archive 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.
Workspaces on Slack’s Free plan have a total of 5GB of file storage to share. If you’ve reached the limit, 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 allotment of file storage increases collectively for every member of the workspace:
Standard plan — 10GB for every member*
Plus plan — 20GB for every member*
*Multi-Channel Guests included
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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