I think the key is to also put the letter in an envelope with your logo when possible.Happy 4-plex hunting

Also the logo, envelope, and cover letters look very professional if that helps.Any feedback would be great or I'll just conform to wholesaling inc. haha.

If you're branding a company name, with logo, website, email and the whole deal then have a super professional VM.

Maybe they try different colors, Headlines, pictures, logos or not etc.

On these types of letters use a logo on your envelope, at least 28 pound paper, Personally I would do a linen, and always a first class stamp and live (real Person) handwritten signature and address...

Hire someone off Fiver to develop a unique mailer and/or logo for your business.  

I cannot display my logo on the Yellow Letter as it wouldnt make sense.Realtors and Professional Investors are utilizing the professional letter with success although the call volume is down over the Yellow Letter Mail piece.

They would be useful for generating inexpensive logos, business cards, etc for beginner investors.

I will obviously add correct contact info and broker logo for actual print. 

Backs are all the same with my logo, contact info and mission statement.