Email Quota Exceeded, Cleanup and Archiving Guide

Understanding "Mailbox is full" Errors

When an individual email box reaches its allocated quota limit, incoming emails bounce back to the sender with a delivery failure notice.

Reclaiming Disk Space Fast

• Empty Trash & Junk: Permanently purge deleted items in Webmail.
• cPanel Email Disk Usage: Inspect folder sizes and apply batch cleanups (e.g., delete messages older than 1 year).
• Increase Mailbox Limit: In cPanel Email Accounts, increase the storage quota.

Local Archiving with Outlook (.PST)

Move older emails off the server to your local hard drive using Outlook File > Tools > Clean Up Old Items. This frees server capacity while keeping message history searchable locally.