Webmail issue with imported Vesta account


I imported an account from a Vesta backup to my new Hestia server. It’s used primarily for emails. When sending emails from webmail on this imported account, I get an error that says “An error occurred while saving sent message. Unable to perform operation. No free disk space.”

The email still gets sent but it does not get saved in the Sent folder. There’s definitely space on the server. Sending emails via webmail from an account that was natively created on that Hestia server does not produce the error.

Not sure where to look next.

Any help would be appreciated.