Temporary file sharing should make both delivery and deletion predictable. If this listing refers to the open-source Send project, verify the exact maintained fork and deployment before recommending it; similarly named services may differ.
Upload a disposable file, set an expiration and download limit, then open the link from a private browser and another device. Test a wrong password, a revoked link, and what happens after expiration. Confirm file size limits and whether logs or backups retain data longer than the user-facing link. The Send project repository is a starting point for version-specific behavior.
Never test with real confidential documents on an unknown instance. Compare alternatives on encryption design, recipient experience, retention, and operator maintenance. A link disappearing from a page is not proof that every stored copy has been removed.
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