Free uploads without an account are stored for ‘as long as possible ™️’ but no guarantees. Also they are publi available in the Media Gallery for anyone to see, and not so easy to delete.

With an account they are stored and backed up for as long as you own the account + 1 year. With an account you can also privately store, manage and delete all uploads in one place, you Media Management Gallery.

Sats back if not satisfied in 21 days!