You have exceeded your mailbox quota for your account. There are several steps you can take to reduce the size of your inbox for better performance:
-
Delete older inbox items. You can do this quickly in the app by setting a custom Swipe motion to delete: Settings > Swipe Options. With this set, you can easily swipe your way through your inbox to clear it out.
-
Empty your spam folders. Go directly into your spam folders and press Empty spam.
-
On Android, you may empty your trash folders with one click. Go directly into your trash folder and press Empty trash.
-
Increase your quota by buying a subscription.
