No, you cannot. We recommend that you keep backups before deleting emails which may be necessary later.
Confirming mailbox usage / How to move your email data to another location
https://www.u.tsukuba.ac.jp/en-email-backup/
No, you cannot. We recommend that you keep backups before deleting emails which may be necessary later.
Confirming mailbox usage / How to move your email data to another location
https://www.u.tsukuba.ac.jp/en-email-backup/