I was given the impression that it was a special deal for us, but as I read the engagement letter, the money back guarantee was a standard language, offering clients 30-day money back guarantee. 

I know he is an active investor because he orders my yellow letters.

Give her a letter showing that you installed a new bike rack and lock for her.If she cannot provide the letter, then insist that she carry the bike to her apartment.

The primary concern with using commercial financing is it typically features a short term, long amortization and a balloon that could be problematic if you cannot afford to refinance due to market conditions at the time the loan becomes due. 

I moved out March 30, 2024 and just recently received a letter from the landlord (54 days later) with deductions  and reasons of not returning. 

I was curious to know 1) How many letters are you sending out to convert one closed deal?

You can write letters or postcards yourself, type them out, or invest in service like Openlettermarketing.com. 

Also, get a "transfer of Property Management" letter from seller at closing, that you can send/show tenants so they know exactly who you are.

For example, I am wanting to send them a welcome letter introducing myself and letting them know some of the changes that will be happening in the coming months.

I'm sure you can find sample letters/rules online.3.