Slack

slack.com · Storage · 1 record · JSON

Slack (free plan) Storage

fails: quotaemail?card?Rper-object-cap

slack.com · messaging · storage/slack · JSON · compare

Free tier	5 GB per free workspace (hard cap), 1 GB max per file, plus a 90-day visibility window and permanent deletion of anything over one year old unit GB; metered on unstated
Price	none stated
Per-object cap	1 GB max per file (1000000000 bytes)
Retention	not stated
Egress	Free; files served from files.slack.com -> files-origin.slack.com behind CloudFront
Identity	email (placeholder) not published
Limits	per-object-cap 1 GB per file source 5 GB workspace total; 1 GB per file; 10 apps max; content older than 90 days is hidden, content older than 1 year is permanently deleted (rolling, since 2024-08-26); high-volume upload throttling is explicitly mentioned in the free-plan limits
Binding	per-object-cap the per-object cap sets the shard size and therefore the object count; it bounds the total more tightly than any headline quota
Interface	rest rest
Tooling	Slack Web API (files.getUploadURLExternal + files.completeUploadExternal), 1 GB per file; jeremy46231/slackfs (FUSE mount, 6 stars) exists but only mounts, does not add capacity
Composes with	5 GB x N free workspaces, but the one-year deletion makes it useless as an archive and the 90-day hide makes it useless as storage. Only viable as a transient relay.
Reliability	Data loss is contractual, not accidental: Slack states it 'will not be possible to restore messages and files once deletion occurs'. Also explicitly throttles 'use for storage and spam'.
Notes	5 GB per free workspace (hard cap), 1 GB max per file, plus a 90-day visibility window and permanent deletion of anything over one year old
Evidence rung	reported One page read moves it to documented.
Checked	2026-10-21 (inherited); stale on 2026-11-04
Parsed numbers	`$.limits[0].value` limit:per-object-cap 1.0 GB

Evidence (4)

date	source	what it proved
2026-10-21	docs.slack.dev/reference/methods/files.getUploadURLExternal/	error table: 'storage_limit_reached - File storage limit has been reached. This occurs when free teams have uploaded 5GB of files.'
2026-10-21	slack.com/help/articles/115002422943-Usage-limits-for-free-w	'You can view and search messages and files from the last 90 days... Messages and files more than one year old will be permanently deleted'
2026-10-21	slack.com/help/articles/201330736-Add-files-to-Slack	'Members and guests can add files up to 1GB in size.'
2026-10-21	slack.com/api/files.getUploadURLExternal	probe: POST -> HTTP 200 {"ok":false,"error":"not_authed"} (API live)

More fields (1)

{
 "dead_end": {
  "failure_class": "quota",
  "why": "5 GB per free workspace (hard cap), 1 GB max per file, plus a 90-day visibility window and permanent deletion of anything over one year old",
  "retry_when": null,
  "first_recorded": "2026-10-21"
 }
}

Unknown or withheld values (7)

$.extras.dead_end.retry_when process
$.free_tier.notes process
$.identity_cost.detail defaulted
$.identity_cost.kind identity-defaulted
$.per_object_cap.notes not-extracted
$.retention.notes not-extracted
$.retention.stated not-extracted