The email address you provide when registering for the HP Support Community is where all “updates” from the community will be sent.
Updates may include details about policy changes, website feature notifications, or new postings to online discussions in which you are participating.
It is vital that you keep your email address accurate so you don't miss any community updates.
For instance, if you change your community password but do not let us know your current email address, you will not receive the new password notification. Likewise, if you fail to provide a current email address you will not receive community alerts or updates about online discussions in which you are participating.
If you think the community has an old email address, please change it to your current preferred email.
How to edit your email address:
1. Log into the Community.
2. Click on your screen name to open a drop down menu. Click on My Settings.

3. Just above the section tabs. Click on account details.

4. Now, to change your email address, click on the Pencil Icon located on the right of Primary email address.

5. The following popup will open for you to change your email address. Click Save when you're done.

That's it! The community now has your current email address and you will receive all necessary communication from us in the same.
I was an HP employee.