Direct Mail Message Variation

[Gant Hinkle]

Is it important to change up direct mail messaging after each touch?  For instance, if you sent a postcard saying the home looked vacant and plan to send additional postcards, is it important that the follow-ups are different and/or acknowledge previous messages?

Example (not exact copy):

Postcard 1 - I noticed your home seemed vacation, I would like to buy

Postcard 2 - I wanted to follow-up and see if you are ready to sell

Postcard 3 -  Call and I will buy your vacant home