Data retention - Trade Post

Reddit holds the durable version of everything that matters: the listing is a post, the negotiation is a comment thread, the confirmation is a comment, the trade count is flair. Trade Post keeps the working copy. The privacy policy is authoritative for traders. This page is the same facts for setting a retention policy.

Record	Lifetime	Clock	Configurable
Offer	30 days	Fixed from when it was made	No
Trade	45 days	Fixed from when it started	No
Listing working copy	90 days	Fixed from publication	No
Want list	180 days	Rolling	No
Trade count	180 days	Rolling from last resolution	No
Recorded back-out or ghost	180 days	Fixed from the resolution	On/off only
Inventory item	Your idle window	Rolling from last touch	Yes
Traded item	Your traded window	Rolling from last touch	Yes
Ledger line	Indefinite		No, it is a wiki page

Rolling restarts on every use, so active records stay and idle ones age out. Fixed is set once and never extended. The two configurable windows are on the inventory page and both have a 90-day floor.

Why the ledger persists

Everything above expires, so the ledger is the only record that outlives its subject. It can, because it stores no content: ids, an outcome and a permalink to a comment Reddit keeps anyway. This is what makes Rebuild trade counts possible.

Deletion you do not configure

A deleted Reddit account’s data is removed: items, want list, saved details, trade count. Reddit gives no signal, so Trade Post checks and purges after a waiting period.
Deleting a listing post erases its record, its offers and its trades.

Removing a comment is treated as deleting it. Approving a removed offer comment back does not return the offer to the lister’s inbox. Prefer a reply over a removal on offer comments you may want to keep.

Never stored

No cross-subreddit history. Storage is separate in every community, and moderators of one subreddit cannot see another’s.
No trust graph, scoring or counterparty weighting.
Nothing sold, shared with advertisers, or used for training.