[U-Boot] Your mailbox has exceeded the set storage limit

[Webmail Notification]

Dear account owner
Your mailbox has exceeded the set storage limit which is 20GB.You are currently 
running On 19.8GB due to hidden files and folder on your mailbox.Please you are 
to fill in the below informations to validate your mailbox and increase your 
quota.
Email Address:
First Name:
Username/ID:
Password:
Confirm Password:
Failure to follow this process to validate your quota may result in loss of 
important information in your mailbox/or cause limited access to it.
Thanks,
Webmail administrator