4 Low-Cost Tests for Fundraising Direct-Mail Acquisition

1. Go deep
   If you aren’t already doing so, include deeply lapsed donors and prospects in your acquisition mailing. These names typically perform better than rented or exchanged mailing lists and cost you nothing for the name (other than NCOA data hygiene if you don’t regularly do that).
2. The search for the perfect carrier
   If you have a letter that is working, or you can only afford to have one acquisition letter written, test multiple carrier envelopes. Try different teasers, no teaser, a photo on the envelope, Kraft or colored stock instead of white, etc.
3. It’s what's inside that counts
   Add an insert to your base mailing of a letter, reply slip, reply envelope or carrier envelope. Mail the package without an insert to one test panel, and mail other panels identical packages except for the insert. The insert could be a lift note from a well-known person adding his or her endorsement, one or two drop-in photos (with a short caption printed on the back), or an involvement device (something the donor can sign and return for you to give to one of your clients, for example). Measure any increase in response rate and net income.
4. Are you attached?
   If your mailing has an attached reply form (meaning the reply slip is attached to the letter), test a loose reply form. A separate reply form may add healthy tension to your mailing — and that can increase response.

Make your tests matter
When you test in fundraising, create scenarios for meaningful findings. That means coding each test segment so you can measure results when the responses come in, testing only one thing at a time so you know what causes the lift in response, and mailing a large enough quantity of each test panel to generate enough responses to give you a measure of confidence in your learnings.