Notifications are sent to the cPanel contact email address when an account has reached its disk space, mailbox space or bandwidth quota at the following percentages: Disk space notifications: Warning at 80% Critical at 90% Full at 98% Mailbox space notifications: Warning at 80% Critical at 90% Full at 98% Bandwidth notifications: Notice at 80% Warning at 90% Critical at 95% Depleted at 99%