I am looking to prepare to scale up and do not want to have to be sending email invoices and going through my account every month to make sure payments were made. 

If you don't want the water or trash in their name, you can invoice them as part of their monthly rent.

In the future, make sure you have the verbiage in the inspection objection that "when requesting a repair, it is understood that a Colorado licensed and insured contractor is used and all invoices, scope of work, and receipts will be provided to the buyer no later than the day prior to the final walk through".  

I asked for invoice from the vendor but she said it's a flat rate and if I wanted an "estimate" it would be an extra $65 charge.

As the tentant and I corresponded back and forth after I advised w/ an invoice of the issues including having to retouch the paint do to a few  scuff marks I was putting a claim against her deposit ($1100.00) She advised I should use the remaining $220 from the from the P.Deposit to replace the single blind and towel bar as the hardware was already in place. 

In fact, Quick Books does not even show that he has even VIEWED the December invoice. 

The property management company is going to take care of all expenses, record all invoices, collect all incomes and do exactly one money distribution to me every month.

The landlord sent an invoice for the rent, plus a late fee, plus $250.

Your PM should defer to the opinion of the professional exterminator and get something written on the invoice as to what they found.

Since THAT involves some kind of maneuvers that look too much like money-laundering (generating fake invoices that plastiq 'needs' to see, for services not really rendered, etc), I'm not doing that.