Or you can write down addresses in a notebook and use software such as Batch or Lead Sherpa to skip trace which will then give you contact information.

I batch applications and choose the most qualified.

I soak the fiber in cool water with lots of detergent in an old laundry tub outside, and just dump it on my grass --three or four washings to a batch.  

I sent a batch of 25 letters and got one response back already.

HOWEVER, there is a big advantage to postcards, they are cheaper.Pro-tip: Use 1 batch of postcards with first class mail then and then switch to yellow letters.

There were supposed to be 4 batches but the server crashed so they put all the certs in 1 batch and extended the time.  

(cards are double sided/color and 4.25"x6"Over the weekend I had an item not arrive on time so I pull up my account to see they have had 3 batches of postcards going back to mid August just "PROCESSING".

-----------> These are some of my "long-winded perks" that I promote in my listings.My "secret sauce" is a simple two-page "Rent-to-Own" agreement, plus a "Complimentary Payment Schedule", for the "Tenant-Buyer's" convenience and record-keeping.Here's a typical deal for me: Let's say, I obtained a batch of 1/4 acre lots from a bank (REOs) or bought a bunch of donated Habitat for Humanity parcels, ...all at good deals, ..."

If it was easy everybody would be doing it.No, I don't think you'll find a batch valuing service.

I have used batch and propstream but I am looking to skip trace 10k+ leads and would love to find a service with high-quality data but at a better price.