Next decide, what you will be mailing and the frequency.

That is why a pipeline gets filled with a process in different stages of buying and selling to increase frequency of closed sales and transactions over time.Good luck.

Here are the things you want to look at 1) Quanity - how many pieces of mail per drop 2) Frequency - how often are you going to mail to the same group 3) Mail piece - you can mail 6" x 11.5" piece for the same price as a #10 envelope.

Since frequency is important over time (until the property sells or the deal is done), does everyone send the exact same letter/post card month after month?

For most homeowners a 7 to 10 year fixed ARM will work, given the average frequency of moving. 

You can set the notices to come at the frequency you select.

What do you recommend as far as frequency of mailing? 

If you intend to mail for an entire year, for example, and send a total of twelve letters, decide the frequency of the mail drops and test response.You could design a campaign that hits heavy early and then takes a rest then starts hitting heavy again after a break.Test, test, test!

The frequency could be any where from weekly, bi weekly, monthly or any other way you can think that coincides with your mailing campaign.

The more wood, the higher the frequency of treating.