I recently started mailing yellow letters to home owners in my area.I feel like am getting a decent response rate, but getting a deal has been tough.

In my market (New Orleans) comps change block to block so you can't just use 0.5 miles, you need to draw a shape around that tight little neighborhood.

@Ashley Budyak - Direct mail is all about repetition so you better be ready to spend some money or have a ton of time so you can print the letters and lick the stamps.If you are serious about doing some wholesaling let me know and we can connect on your plan and strategy.  

Point 3 umm it litterally changes by the block so that's tough to say.

One lady I talked to who i sent a letter to said she and her husband are liquidating their SFH to invest in their new business (that's thriving)...it's a mountain community only for 50+. 

Maybe a letter from an attorney would add some motivation.

I also have been unfollowing or blocking spam accounts to make mine look more official.

I lived on the same block and knew the family.

Try and get them to sign if you can acknowledging the letter.

I have sent letters to the last known address, contacted the city and the county & no such luck of reaching the owners.