Send is a self-hosted file transfer service designed for end-to-end encrypted file sharing. It provides a privacy-focused data transfer solution and ephemeral file storage where uploaded content is automatically deleted after a specified number of downloads or a set amount of time.
The service ensures private file sharing by utilizing client-side encryption to protect data before it is uploaded. Decryption keys are distributed to recipients via URL hash fragments to ensure the server never has access to the keys.
The platform supports encrypted data transfer and temporary file hosting. It uses symmetric key encryption and direct-to-storage uploads to manage the movement of sensitive documents and media.