Will I be notified if I need to upgrade my account?

hello, i am currently using the Free account, to see how much traffic I use.  Will I be notified if I need to upgrade?  How does that work?

thank you!

Yes, you'll be notified when 90% of your total limit is used. Any of the limits such as regular/SSL submissions limit, payment submission limit, File Storage, Form Views and Total Submission Storage.