We are on the free plan of Slack. This means, that we've 5 GB of space for files.
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.
As we hit the zenith, Slack started to send messages along the uploaded attachments:
Your file was uploaded — it’s safe and sound in Slack. Unfortunately your workspace doesn’t have any storage space left. To get more space, you can upgrade to a paid account or delete some of your older files.
What does that mean? This warning is quite confusing. Does it mean we have unlimited space, but it's not guaranteed to last for an eternity? Does it mean older files get deleted to make room for the newly added file? Is it just a temporary thing and sooner or later we really aren't able to upload files anymore?