Free to landlords- Eversign and Signwell - Electronic signature portals for leases.

Have you considered an electronic lock like this one? 

I know I’ll have water well maintenance, hvac, driveway work, and electronic replacements and furniture on the horizon.

I don't require electronic payment but push for it.

If you want to buy the list from the county, it costs $100In Linn county, no cell phones, pagers, tape recorders, camcorders or other audible electronic devices can be used/turned on during the auction.

You can have the tenants pay you electronically, you can pay vendors electronically, store leases, post notices, accept task requests, screen tenants, and more. 

There are many "Free" ways you can set up electronic payments however you want to make certain that you eliminate the risk of tenant fraud or eviction redo.

I love all the best and new electronic gadgets.

I would personally recommend putting all expenses on a single credit card, only accepting check/Venmo/electronic deposits for payment, and using an app like Quickbooks to keep track of and categorize receipts.

If it's electronic, so much easierLate Rent:  Who will handle notifying the tenants?