Priority Mail can be accessed online too. 

Online Webmail Access 

This means you can send and receive messages from any computer connected to the Internet. You can use your Priority Mail at school, home, university or at work from any computer with an Internet connection. 

Your messages are stored on our secure servers, waiting for you view it online or otherwise download the email via your desktop email. This is great for people who use several computers, travel frequently, don't have their own a computer or share their computer with too much other people.

When you create an account at Priority Mail, you choose a permanent e-mail address that will never change as long as you continue to stay a member of Priority Mail.

You are free to select any Internet Service Provider to connect to the internet because your Priority Mail address will stay the same no matter how you access the Internet, so you don't have to worry about notifying friends, family and associates of a new e-mail address when you change from service provider.

If you leave your current employer or university you lose access to the e-mail account that's only available for employees or students so it make sense to have a permanent Priority Mail account. 

Keep your private email private and access it on your own time and leisure from anywhere you have internet access, whether it's an internet cafe, a friends computer, from work or on your own PC.