And one more question is there any preference between Post cards and yellow letter?

Be it yellow letters, custom postcards, etc. it seems that this tactic of REI marketing is alive and fruitful here in CO.

Sending postcards and/or "Yellow Letters" to all of the houses in a specific area?

One suggested La's Amazing cleaner, it is a yellow cleaner in a simple clear bottle from Dollar Tree.

Jennifer S. and yellow letters is a great resource for direct mail.

I wanna do yellow letters

Go to the Marketplace on the tab bar at the top of the page >> Click on Hard Money Lenders >>> Click on Oklahoma (it doesn't show a yellow marker but if you click on it, 2 businesses will pull up) >>>> Visit their websites and find contact info.

As a beginner i started my yellow letters in the "hood" of hoods.

It took me only 10 yellow letters hand written and 3 call backs, then one offer to get a deal.

Just trying to figure out a new somewhat cheaper approach because as of now buying a list and then having list mailed out using a second company, yellow letters, is a little to high for me right now.