Your Email on the Web
There are some advantages to reading your email on the web.
You always have access to your mail and you don't use up hard drive space keeping email on your computer. However, with the huge drives available today this really isn't an issue.
There are several web email services available besides your ISP's email interface. These include Gmail, Hotmail and Yahoo mail. There are others, but these are the biggest and probably the most used.
Gmail (provided by Google) has the best spam filters, bar none. It provides users with many options for handling email. Gmail can be downloaded to an email program using either POP3 or Imap. It can forward your email to another email provider and a choice can be made to keep the mail on Gmail or delete it once the mail has been forwarded. Lots of options, more than most web mail providers.
Gmail does not use folders to filter mail, but uses 'labels'. Personally I do not care for 'labels' as I would rather keep email separate from the Inbox, but many folks like Gmail labels.
Outlook.com, aka Hotmail, requires a Live ID to use email. According to Microsoft, 'Your inbox capacity will automatically increase as you need more space.' This wasn't always the case.
Hotmail's spam filters work pretty good as well. You can create folders and filter emails into the folders. You can also create an alter ego or alias to help reduce spam.
Yahoo email provides a way to make folders and filter email. Yahoo also provides unlimited storage space. (This wasn't always true and for some users depending on what country they are located may still not be true.) Yahoo's spam filters leave a lot to be desired. (A lot of good mail goes to the spam filter) Yahoo Mail cannot be downloaded to a computer unless the user has a third party program installed, called YPops. Yahoo will download mail for users with a paid account.
Many ISPs use Yahoo mail for their webmail. When I was an AT&T customer, my email was served by Yahoo mail. I could download mail, but the spam filter was so bad I had to turn it off.
Yahoo has finally moved most of their accounts to the new web interface and a lot of folks don't like it. I decided to see what the fuss was all about, and you can see what I found out here, Yahoo Web Mail.