Gmail is an online email application which can store all of your email. Sending, receiving and finding old emails is very convenient.Gmail
Yahoo mail is an email application that is fully featured and offers unlimited storage. Although it is a good choice, their ads are very present.Yahoo Mail
With mail2web you can check any email address through the web. It is a great alternative when your provider doesn't have a good webmail interface.Mail2Web
Windows Live Hotmail is an online email service. You can send, receive and archive email in one place. It has plenty of storage and nice looks.Windows Live Hotmail