I had written a demand letter for over $5k of damages to the unit, backing this up with invoices for painting and flooring.

I recently started getting itemized copies of vendor invoices as back up for repairs.

Most of my tenants are going to ACH deposit but I also can invoice them from intuit quickpay or use a rent service. 

Great for creating recurring invoices, generating balance sheets, general ledgers, & income statements.Wish you and your partner much success.

Plus they have to provide you with a genuine receipt of the repair and it must be on an actual company invoice that did the job. 

Make sure that you take pictures of every appliance, have them listed in the lease as part of the house, and keep receipts or invoices.

It says "adjusted bathtub stopper" on the invoice.

You can also write them an email explaining the fact that you will not pay any invoices that don't have your approval.

The issue is a civil matter and the tenant will either need to consult an attorney for any damages they feel they incurred or file a complaint with the housing department in whatever government agency has jurisdiction oversight for housing in the area of your property.fyi, should you get an invoice for a "hotel" bill send a reply with a copy of their rental agreement or lease asking them to identify where it states they should be reimbursed. 

Are all my invoices uploaded to my owner portal?