Need Email management features like bulk search and bulk delete.
How can you ever expect any user to maintain their Mailbox and keep it under your new size limit, if you don't provide any means of deleting bulk email? Even if I search on a key word or an email address, if that results in 10,000 emails, but you only let users delete 25 at a time, NOBODY is going to redo 400 searches to delete all messages from ONE sender! If you want to keep users from going somewhere else, then provide some means to do bulk searches and bulk deleting of emails.

-
We help you delete a lot of emails at one time. You can go to Settings > Manage Storage. And to bulk delete, you click on the checkbox and a new checkbox will appear at the very top. From there you can Select All and then Delete All.