Steve,Interesting service. 90% of our routine bill payment is electronic now, I only write cheques for a couple of our trades.If these are truly like a bank draft, you as the issuer can sign it back into the originating account, but will likely need to do it in person at the bank.The bit about the Vendor making a cheque back to you is ludicrous.

Do they allow electronic signatures and document uploads, as opposed to wet signatures and hard mail or faxing?

Titles when properly executed are supposed to be mailed by the titling authority to the primary lien holder in almost every state unless it was an electronic filing in which case the park would not have the title.You, as a lender, should have had a written agreement with the park as to you, the lender's relationship with the park that should spell out any obligations you have or don't have to the park and any obligations they have or don't have to you the lender.The park does not have the right to stop your repossession, but they may, depending on the state, place an additional lien on the home for back lot rent if you do not have a written agreement with the park to the contrary.

Allowing you to trade in stocks and mutual funds electronically does not open that huge pool to Real Estate or other asset investments.

I feel the vibration made by electronics can really transmit between levels but not sure.

For rent, I take electronic payment. 

On new lease renewals offer a discount for rent electronically received by the 1st.    

But what if you are filing electronically?

I've never used a property manager since all of my tenants pay electronically but I couldn't agree with @JERMAINE LUCAS  and @Sam Chavez more. 

I have everything in electronic files including 3 years of tax returns.