FTP or File Transfer Protocol was never designed to be hack-safe. Files exchanged using FTP are not encrypted. Hence, this service is susceptible to various kinds of security risks such as spoofing, sniffing, etc.
Although the FTP is insecure, it is a very fast way of transferring files.
When the connection is lost during file transfer, it is possible to resume such a transfer.
It also allows for queuing, scheduling, uploading, and downloading of files.
The full meaning of SMTP is Simple Email Transfer Protocol.
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