Email at 100% after deleting over 2000 messages with attachments and emptying the trash

Hello and Good Morning, @user_6f46f2

Thank You for taking the time to reach out to Xfinity Support, here on the Community Forum 😀

Are you going to webmail to delete emails or just deleting them from your iPhone and iPad?

Log into https://login.xfinity.com/login with your username and password and try deleting your emails from there.

Try getting rid of emails with large attachments. Save the attachments to your device and delete the emails. https://www.xfinity.com/support/articles/xconn-email-storage-limit

Also consider adding another email address. You can have a total of seven. https://www.xfinity.com/support/articles/stay-connected-with-email

@user_6f46f2 

After deleting emails from the webpage on your computer, make sure you clear your cache and delete cookies, close the webpage and browser and then do a fresh start with your browser.  Also, once you delete the emails are you emptying the trash?