My question involves landlord-tenant law in the State of: DE
I rented a room in Delaware for 525/month as a month to month renting. We had an agreement to have written notification of termination of 30 days. Each month starts on the 1st and ends at the end of the month. I notified my landlord on the 31st of Jan, emailed him on the 1st of Fed, and moved out on Feb 29th. He is now withholding my full security deposit of $525 for not notifying him within 30 days since this Feb only has 29 days. What should I do?