The sites are still under construction, and Masayuki Itomitsu, who created both sites, welcomes comments and suggestions from users. This is a quick update on the topic. Once the mail is downloaded, it is stored exclusively on your computer in a file. We recommended this setup in the web document because this way, we can bypass most, if not all, potential Japanese-language related problems with the server computer. Let me discuss each one below.
POP is the more straightforward of the two.
With POP, you download mail messages in their entirety onto your computer. Any subsequent reading of the messages takes place off-line. The straightforwardness is also a drawback for some people. Suppose you read mail both at work and at home. If you download mail at work, the same messages cannot be read at home unless you carry them on a floppy disk or something.