Nearly All Internet Service Providers Offer:
.. online email access. Verizon Netmail for example, through a browser such as firefox, chrome, etc..
As I said, you can also use Gmail, hotmail, yahoo mail for example, and access from a web interface.
This is becoming more and more common all the time.
Benefits include being able to access email from anywhere or any other computer, without having to set up an email client.
Point is when you use a client on your computer, have your contacts on that computer, have your read emails on that computer, there is a chance of that data being hijacked.
WEB BASED email, is safer in some respects. Like I said, there is no perfect solution.