Webmail access is available on every website.
For sites built after April 1, 2011 use the Cloud Server address. Prior to that use the Shared Server address.
Cloud Servers: http://webmail.yourdomain.com
Shared Servers: http://mail.yourdomain.com
If you are using IMAP, your received and sent email will be accssible in your webmail.
If you are using POP3, the emails accessible in your email may vary from nothing to the amount of emails you received over the last x number of days. If you have zero emails it is likely that your computer email client (like Outlook) is removing emails from the server on download. If you have a few but not a lot, your email client is likely set to leave email on the server for x number of days before deleting.
Resetting Email Password
Email passwords can be changed via webmail. Below is the process for changing email passwords on Cloud Servers.
Log into webmail using the address above.
Click on Settings in the upper right of your webmail.
On the settings screen, click on Change Password on the left.