I have read that yellow letters cost less based on response rate. I have read about people doing very well just mailing postcards. I understand that the list I pull is a factor and  testing and tweaking is something I will have to do. Also touches is a factor - many people agree that it basically takes 4-6 touches to get a response...

Questions?

Will (1) one touch using postcards every month (4-6 months with higher volume) possibly get a better response than mailing every week with 6 touches in 6 weeks using cluster mail (with lower volume)?

Is 3000 postcards once a month enough volume to get a better response than 300 cluster mails a week? 

I would like to know which would possibly be the most effective.

My budget is based on 3 months of  (2) 6 week campaigns and will allow me only 1(ONE) of the options for mailing: 

Postcards:

Option 1- 3000 Postcards a month (sent out in 1 shot every month) 

Option 2 - 1500 Postcards every 2 weeks (will run campaign for 6 weeks then scrub list and repeat)

Option 3- 500 Postcards a week for 6 weeks (will run campaign for 6 weeks then scrub list and repeat)

Cluster Mail:

300 pieces a week for 6 weeks (will run campaign for 6 weeks then scrub list and repeat)

Week 1 -Yellow Letter

Week 2 - Yellow Letter

Week 3 - Postcard

Week 4 - Typed Letter

Week 5- Zip Letter

Week 6 - Yellow-Letter

Anyone with experience and input would be greatly appreciated