To update your contact information in cPanel, you can use the Update Contact Information feature.
This feature allows you to change your primary contact email addresses. These email addresses will function as the main contact points for notifying you of new information regarding your website.
It is recommended that you use an email address not affiliated with your website, as this could be useful if your website’s email stops working. A second contact email address can be added if you have one.
The series of checkboxes below your email address will determine the reasons you could be contacted for. An email can be sent when:
a) Your disk quota is almost full — This means that your website is close to reaching the maximum amount of disk space that you are allowed. A full disk quota results in you being unable to modify existing files or add new files to your website. Delete old or unused files, or upgrade your hosting plan to fix this issue.
b) Your bandwidth is reaching its limit — This means that your website has received the maximum amount of traffic it is allowed. When you've reached maximum bandwidth, people will no longer be able to access your website. You will need to upgrade your hosting plan in order to fix this issue. Otherwise, you will need to wait until the limit is reset at the start of the next month.
c) Your email accounts are almost full — This means that one of your email addresses is close to using the maximum amount of disk space it is allowed. Delete old email, or upgrade your hosting plan to resolve this issue.