1. Simple Asynchronous File Transfer Sendfile is an asynchronous file transfer service for the Internet, like the sendfile facility in Bitnet: Any user A can send files to another user B without B being active in any way. The existing standard file transfer (ftp) is a synchronous service: The user must have access to an account on the sending and on the receiving site, too. Sendfile for Unix, which is an implementation of the SAFT protocol (Simple Asynchronous File Transfer) now offers you a true asynchronous file transfer service for the Internet. Virtually any form of file can be sent, including encrypted ones. The SAFT protocol will be submitted as an RFC in the near future. From Debian 3.0r0 APT