If the goal is to delete 25k emails to free up storage space:
Here is a complete write-up on accessing and clearing a massive backlog of emails: 1. The Strategy: Bulk "Mark as Read" (25k+ Emails) 25k mails access.txt
Click the "Mark as read" icon (envelope icon) in the top toolbar. 2. The Strategy: Bulk Deletion (Clearing Storage) If the goal is to delete 25k emails