Modify Mailbox sizes on Plesk

In Plesk, you can set the storage allocated to each mailbox.  Once a mailbox is full, it will no longer be able to receive emails.

You can increase or decrease the mailbox size by following the steps below:

1. Log in to your Plesk account.
2. Select the domain for the email account you want to change, click on the Mail tab and then Mail Accounts:
   
3. Click on the email address you would like to change:
   
4. Scroll down to the Mailbox setting and select Another size and type in the new size of the mailbox:
   
5. Click on OK at the bottom of the page: