get -delete behavior

Hi There,

As stated in the title:

How does the get-delete command know files got transferred completely when using FTP? I need to know this because there are lots of small files being generated server side and I need to get all of them always.

Would get -delete be secure enough for this purpose?

I do not understand the question.
WinSCP transfers the file and only if the transfer completed successfully, it will delete the source file. Does this answer your question?