You may want to specify the email storage limit for your email accounts. Below is a step-by-step guide on how to change mailbox quota.
Change Mailbox Quota via cPanel
Step 1. Log in to the cPanel.
Step 2. Under Email panel click on Email Accounts.
Step 3. Email Accounts tab, look for the email address you want to update.
Step 4. Click Disk and Quota.
Step 5. Enter the desired email storage limit.
Step 6. Click Save.
The system will automatically update the storage space of the email account.
If you have further questions, please do not hesitate to contact our support team.