Documi.

Documi allows you to send your documents securely. You get to watch how, when, where, and for how long your recipients are consuming your documents. Once documents are no longer needed, you can easily revoke access to the documents without leaving anything behind on the recipients documents. You can also optionally allow your recipients to forward your documents. And you get the same control and visibility for the recipients the documents were shared with by your recipients.

Documents never leave your device unprotected. Documi encrypts the documents on the device before sending them out. Only your intended recipients receive the documents and all associated keys to fully decrypt the document on their device. All the crypto operations happen automatically behind the scenes to give you that piece of mind that your documents are always safe and in your control even after they have been shared.