A few of my favorites: Flashlite app, realtor.com to communicate with my buyers, TMM Track My Millage, iZip to send out zip files (pictures) of properties to clients, Zip Tools for demographics by zip code, pages to manage my business pages, Dropbox, logmein for Remote Desktop access, Skype, ink to send cards, Framies to make creative photo frames, Slydial to leave messages directly into someone's voicemail, jot form to view/manage web forms, mail chimp, abodograph - photo resume of your listings, MiFunnel - commission tracking (I am affiliated with this one), Quicken Loan mortgage calculator, Zillow/trulia Agent.
Personally, I hate junk mail. When I want stuff, I google it. This sounds like a letter you received from a consumer you've haven't been in REAL touch with (like making a phone call) for a long time.
MilesTrac works really well for me. That's an app on the android store
How did they make it all these years without a website?