After mailing out the initial wave of say yellow letters, how long and how often is it recommended to send a follow up mailer?

Some of them are waving money in my face saying "here!  

Yep, another wave of newbies thinking are buying some kind of rights to the property, or that they'll actually get 18% interest. 

I just finished sending out 475 postcards in 3 waves so the last wave just went out on Saturday.

I just finished sending out my first wave of direct mail postcards and my plan is to start out wholesaling properties to gain more experience to be able to venture into different areas of real estate.

In my area, you can go to any RE broker waving a preapproval letter for 155k in their face and they will smile at you like one of those cheshire cats.I have always been the type of person who succeeds in everything I put my mind to RE is no different thus far, to this I say thank you naysayers for the motivation.

Bank Owned Recently Purchased Owner Occupied (with up to date taxes paid)Mortgages in the last 8 years or for amounts that are extremely higher than the house could be worth I then move the properties that are remaining into a spreadsheet, I have 2 waves of marketing one for the beginning of the month and another for the middle, by July 1st I should have 100 total properties on my spreadsheet.

@Jason FarmerThose billionaires also don't need them money anytime soon, have money to lose and can buy enough to transform an area and do it right now buy a few hoping to ride the wave and have someone manage them for 10% of low rents.  

Trust deed investing, also known as lending on trust deeds, has grown in leaps in bounds since 2009. With banks in turmoil in 2009, it prompted a surge in private money lending from 2009 to 2015. So why such interest ...

Some of the updates I want to make are built-in micro-wave, replace the tile in the kitchen and the carpeting in the living room with all porcelain tile.