@Claire TrammellWe have been doing most of what you suggested, except for the frequency.  

.- in 3 years (January 2020): develop and manage a growing real estate business that gradually employs an increasing number of people to handle increasing deal size/frequency.- in 1 year (actually 6 months - January 2018): make my first 3 profitable real estate investment deals (either cash flow positive or after reselling).- in 1 month (30 July 2017): learn the complete process of successful real estate deal making in Belgium (preferably Brussels) from a successful and experienced real estate investor.- in 1 week (02 July 2017): offer free assistance to 10 successful real estate investors in Belgium.- today (27 June 2017): find contact details of 10 successful real estate investors in Belgium.If anyone is interested in learning about Belgian real estate and sharing thoughts on the matter, I would be more than happy to share my complete journey on the BiggerPockets forum.

Most of the prior responses have listed many factors that may impact the response rate: letter, postcard, color of the piece, day mailed, frequency, hand written, or using an address label, etc.

Two things work for me : consistency and frequency.

I imagine it includes:Template creation: Form, font, size,Data entry: Putting new leads into templatesPrinting: One-at-a-time v lead packetInventory Management: Letters, envelopes, postcards, stamps, etc.Envelope Stuffing: Plus all other manual work to prep a letterScheduling: Determining the the frequency of lettersTracking: Watching lead to letter and where they are along the marketing funnelWhat else am I missing?

My question is, I want to balance frequency vs. reach.

The purpose if your mail piece is to get them to take a particular action like call you, return a mailer, go to a landing page, etc.Then there's the matter of frequency of contact.

Originally posted by @Jaelyn Whisler:Depends on how you choose to budget how much you can spend on the mailouts at one time Budget is not too big of an issue, i am just wasn't sure effectiveness of my frequency.

So, frequency of mailing should be of high importance to you as a direct mailer.

I get that the software doesn't make the deal, but don't you use anything to keep track of direct mail campaigns, mailing frequency, etc?