Postcards with "we buy houses" or "Cash For Houses"?

Should I divide the campaign...500 letters and 500 postcards?

After pricing 3 companies, Yellowletters, Postcard Mania, and Vistaprint I went with Vistaprint.  

(I also think half the absentee owners are other investors that are wise to the yellow letter tactic; I prefer to send variable print postcards or professional letters to absentees...  

If you send a "sneaker" piece that misleads people, you will need to be sufficiently compelling in your sales conversion to address any concerns regarding trust and comfort with someone who fooled them with their mail carrier (envelope).The purpose of the mail piece (letter, postcard, etc.) is to get someone to raise their hand and say, 'I'm interested in learning more' so they call (or write) you.

I started my first direct mail campaign (absentee owners) thanks Account Closed ; the post cards went out Monday and I have already received 4 phone calls from motivated sellers.

Example 1-877-WeBuyHouses on a Postcard, Professional Letter or ZipLetter is fine however also include the local number as the number to call.

You can do a search here on BP about yellow letters, post cards, etc., and find so many posts about it, it can be a little overwhelming.  

Is this the type of content that I would be putting into my postcards as well? 

I am about to do a postcard mailing to absentee owners to sniff out motivated sellers.