Rentalutions has other electronic options, including the option to pay rent with Bitcoin which clear much faster than an ACH payment.

Besides Zillow and those type apps, are there any that help you send and receive pdf files or apps that you can electronically sign for things.

All offers are made electronically, so once the offers are decided, they can go in quickly.

I started in "electronics engineering" (aka paper-pushing) and moved eventually to flight test, did a lot of teaching, worked the black programs, all the fun stuff.

Check out electronic billboards which are affordable compared to static printed boards.  

Other than direct mail, we do:1) Pay-per-click (Google Adwords, search marketing)2) Add your business to "Google My Business" - this makes you show up ON THE MAPS.https://www.google.com/business/3) Outdoor - electronic billboards are more affordable for RE investors4) Door hangers and Post-It Notes5) Car wraps - way more effective than simple car magnets6) Sponsoring events where we get a booth with banner, etc.7) In markets where allowed - Bandit Signs8) Flyers on cars in parking lots...

By certified mail or electronic?

I used to stagger rent since I rent to mostly a non-electronically-apt demographic, and it turned into them always needing until the end of the month anyway (my dates were like the 25th, 26th, etc). 

Keep electronic copies of your invoices and receipts and make sure your are running everything through a bank account designated solely for the rental.

Hankook is still ramping up and LG electronics is coming.