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Mailbox quota

How to check mailbox usage, free up space and change an address's quota.

Mis à jour le 05.10.2026. 2 min de lecture

Every mailbox has a quota, the maximum space for messages. When it fills up, new messages are rejected and the sender gets a notice. The total space depends on your plan.

Checking usage#

  1. In cPanel open Email Accounts.
  2. In the Storage: Used / Allocated / % column you see each mailbox's usage.
  3. You see an overview of the whole account in Disk Usage (the Files section).

Freeing space#

  1. Open webmail and delete old messages with large attachments. Sort by size.
  2. Empty the Trash and Junk/Spam folders. Messages in them still use space.
  3. Download messages you want to keep into a program (IMAP folders or a local archive), then delete them from the server.

Changing the quota#

In Email Accounts click Manage next to the address, enter a new value in Storage Space and save (Update Email Settings). The quota cannot exceed your plan's space. If you need more, open a ticket.

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