Should I send a variety of mailings (yellow, postcards etc) or just stick to one in the beginning?

Once you have this list, you can either send yellow letters out or cold call the sellers.

At least this is what I thought, I never did a paper comparison of both tax strategies.In a real real estate business doing wholesaling and fliping, where there's driving expense, buying of software, monthly fees for (too) many services like VA's, call centers, out bound dialers, yellow letter mailing expenses.

You can also send out yellow letters to people.

I have read ideas of bandit signs, yellow letters, just about everything you can do to get into wholesaling. 

And I'd look more at the people who are hocking the yellow letters like yellowletters.net and marketlikeawholesaler.com  The most common metric is 1-5% leads are generated and 5% of those leads turn into deals.  

To keep costs down, I wrote content (or copied some of it from other sources) for my yellow letters and saved it my electronic records.  

I always put an yellow and black or black and white, "I will buy this house today if the owner will call me at 000-000-0000" yard sign by the sidewalk, and it has gotten me a call back about 46% of the time.

Notice I didn't say yellow letters because I do not do them.

Frantzces - all of our marketing is the same - we market probate leads, just today somebody called us - and the subject property was worth 2 millionit looks like this:month 1 - #10 white envelope / computed generated letter (cgl)month 2 - #10 yellow envelope / cglmonth 3 - postcard - 3 seconds of branding - cause they might have tossed our envelopesmonth 4 - #10 pink envelope / cglmonth 5 - repeat cylewe try not to get to fancy - this is a numbers game!!!