The quota limit for an Email Address defines the amount of mails (in MB = Megabytes) that can be stored to its mailbox. If this limit is exceeded,the incoming mails will be returned to the Sender with a message stating that the Recipient's mailbox is full.
To change the Email Account quota:
1. Login to cPanel.

---

2. In the Mail Section,click on the Email Accounts icon.

---

3. Click the Change Quota link corresponding to an Email Account for which you need to change the quota.

---

4. Give the new email quota in the Mailbox Quota field.
5. Click on Change Quota.