Printing Handwritten Letters w/ Mail Merge

Just do it without the lines, which should have low impact on conversion anyway. Also, try pink paper, it has worked great for me.

Now if I could find a decent postcard printer that does mail merge..

Recently I was speaking to someone about the letters on Yellow Lined Paper and he said that he had been using it successfully for years but recently stopped because it was getting expensive. He said that his calls just stopped. He was frantically trying to regroup and gain back the ground that he lost. This was one of many calls like this that I have taken. I do agree that the letters on Yellow Lined Paper produce leads, but to address the concern about whether it produces sales is the question. This really depends on your strategies for the conversion process. Are you a good closer or are you just another guy in the pack of guys going after the same piece of business? The letters on Yellow Lined Paper will get your piece to the "A" pile of mail and actually get it opened first, but for action to take place the what's next component must be addressed. Have you enclosed a business card or given the person some incentive to call you? Are you driving them to a landing page or free report that engages them? Will they get a second and third touch? OK...some of you are saying, "I just want the guy who is ready to sell his house." That's great, but remember this person is getting hammered with many messages. What will set you apart? What will set you apart is the personal touch. A hand written font like the "Andrea" font helps, but the language that you use to communicate is more important. Does your letter reach out and virtually shake the prospects' hand? Does it introduce you or your services? Does it EXPLAIN why you chose to use the Yellow Lined Letter? Wow...never thought of that, did you? The greater the ticket or more lengthy the process the more you need to focus on the trust-based aspect to your marketing techniques. People don't want to be sold. They want a problem to be solved. Here is why the letters on Yellow Lined Paper and hand written font (including copy enhancements) work, they are wrong. The person's brain receiving the Letter on Yellow Lined Paper views it as wrong.
Look what Psychology Today says about this:
It turns out that there are two typical brain responses to mistakes. One looks like a "wake up call." The brain hones in on the negative outcome, and treats it like a problem that needs solving. What happened, and why? The brain also increases its attention during the next decision, as if it is trying to prevent a repeat of the mistake. When this happens, people are much more likely to improve their performance and learn from the mistake.
The second brain response looks more like a shutting down. The brain reacts to the negative feedback itself as a threat. To escape feeling bad, or doubting one's abilities, the brain chooses to not think about the mistake. Interesting, people whose brains show this shutting down response pay much more attention to positive feedback.

So...once you have captured the attention of the audience, provide the positive personal feed back that is needed and response will increase.