Can you please explain working concept of mail2web.com ?
It works quite similar as Outlook or Thunderbird.
It will login on the e-mail server you provide, but instead of showing it in a program on your desktop it will show it in the browser window.
If the e-mail provider doesn't have a webmail interface (quite unlikely these days) you can use solutions like this on the go. But it does mean you are giving away the login details to someone you don't actually know, who knows what they do with it.