A genuinely free SFTP server for testing: unique credentials, sample files included, deleted automatically after an hour. No account, no email, no trial that turns into a bill.
There is no account to create, no email to hand over and no card to enter. You are not starting a trial and there is nothing to cancel. The limits are stated up front: one hour, 10 MB, and a fair-use cap of five servers an hour from the same address.
This is a sandbox. No production data, no personal information, no secrets, and nothing you need to still be there tomorrow. If you need a permanent SFTP endpoint, you want a real server rather than a sandbox.