I have not heard of inactive account fees on accounts with a significant amount held in them. Typically, they charge you for keeping too little in there, sometimes regardless of activity.

Edit:

I did a little research. Bank of America has no dormant account fee that I can find. SunTrust does[1]... but only for Florida accounts, for some unknown reason. This may be a jurisdictional thing.

[1] https://www.suntrust.com/content/dam/suntrust/us/en/personal... (page 6)