Fluxer automatically expires older attachments. Smaller files stay available for longer, while larger files expire sooner. If someone opens a message with a file that is close to expiration, we extend its availability so it remains accessible.
How expiration is decided
The timer starts when you upload the file. Files of 5 MB or smaller keep links for about three years, the longest window. Files near 500 MB keep links for about 14 days, the shortest. In between, larger files get shorter windows. Files above 500 MB are not accepted right now.
Extending availability when accessed
If a message with a file is loaded and the remaining time falls inside the renewal window, we extend the expiration time. The renewal window depends on size: small files can renew up to about 30 days, while the largest files renew up to about 7 days.
One view is enough to refresh a file. You do not need to click or download it. Multiple views inside the same window do not stack. The total lifetime is capped at the size-based budget, so repeated renewals cannot keep a file available indefinitely.
What happens after expiration
We regularly sweep expired attachments and delete them from our CDN and storage the same way as attachments you delete yourself, which section 7.3 of our privacy policy describes.
Why we expire attachments
Large media is expensive to store indefinitely, so expiration keeps storage fair for everyone. Clearing older uploads also reduces the chance that sensitive files remain accessible for longer than needed.
Keeping important files
If you need a file, download it before it expires. For full account exports, including attachment URLs, see exporting your account data.
Frequently asked questions
Does Plutonium extend file expiration?
Not at the moment. The same attachment expiration limits apply to all users.
Do I need to click or download a file to keep it available?
No. Viewing the message in chat or search is enough.
What about saved media?
Saved media lets you keep up to 50 files, or 500 with Plutonium, and section 7.1 of our privacy policy exempts it from attachment expiration.
Can I hide the expiration indicator?
Yes. Open User settings and find Media buttons under Chat > Media. Switch off "Show attachment expiration indicator". This is an advanced setting.