I'd probably respond with a "we're all in this together" letter...

There are just a lot of moving parts (residential/commercial mixed use) within the deal and with this whole virus thing going on I would definitely plan on a longer time to rehab and get the units rented.

I would send the tenant a letter advising them that the deposit would be held until normal operations are able to resume or until you can get someone in there to repair the damage they caused.

I was reading this post. https://www.biggerpockets.com/... about a letter to send to our renters, however, I'm wondering if this it is still a valid letter. 

If you decided to pre-analyze you would have to experience of analyzing 100 deals and maybe mail out say 10 letters at $5.50 expense, but you may not get a bite on any of those 10. 

Owners, especially absentee owners, get TONS of letters.

Can I just go write up some letter head and write myself a receipt? 

I have all of these steps mixed up in my head when I practice with the calculators.

First of all, the didn't ask me too many questions, they asked how much I need and where is the properties.Then the gave me a simple and not professional application via Word document and there as no section to put the ARV (As I am searching for a fix and flip).Gave me an approval letter without any mentioning the monthly payment, the interest that I'll pay...And finally wrote that I need to put 2% (2 points) BEFORE closing, the was the final red flag for me.Be aware of these scams

Having a preapproval letter will put the seller at ease and help them choose your offer since they know the financing likely won’t fall through when the property is under contract.4.