Discussion of these is beyond the scope of this presentation. This program requires a separate software installation on your computer. After installation, one can connect either by direct dial-up or via the Web. I am not familiar with the POL email program. One disadvantage is, that you can only connect to POL from a computer that has POL installed on it.
Access is ONLY by direct dial.
There is no Web access. This is another advertising-supported site. The difference is, that it is accessible via the World Wide Web. So you do need access via the Web. One of the best uses is to provide individual email boxes for other family members when there already is one ISP- email account.