You’ve never done direct mail before, or maybe you’re getting back into it after years of digital-only marketing. Either way, this guide walks you through building a prospecting campaign from scratch.
Step 1: Define Your Target Audience
Before looking at any mailing lists, get clear on who you want to reach:
- Demographics: Age, income, homeownership, education level
- Geography: National, regional, state, ZIP code, or radius around a location
- Behavior: Past purchases, interests, subscriptions, donor history
- For B2B: Industry, job title, company size, technology usage
Write a simple statement: “I want to reach [description of person] who [behavior or characteristic] in [geography].”
Step 2: Research Available Lists
Once you know your audience, it’s time to find the data. You have several options:
- Browse a list directory — sites like ours organize thousands of lists by category and segment
- Work with a list broker — a broker researches options across multiple list sources and recommends the best matches
- Contact list owners directly — if you know a specific publication, association, or company has the audience you want
For each potential list, ask about: - Universe size (total available records) - Available selections (geography, demographics, recency) - Pricing (CPM — cost per thousand) - Minimum order quantity - Delivery format and timeline
Step 3: Test Before You Roll Out
Never mail your entire budget on an untested list. Start with a test quantity of 5,000 to 25,000 names from each list you’re considering. This lets you:
- Compare response rates between lists
- Validate your offer and creative
- Identify the best-performing segments
- Calculate your cost per acquisition before scaling
A good test matrix might look like: - List A: 10,000 names - List B: 10,000 names - List C: 10,000 names - Total test: 30,000 pieces
Step 4: Create Your Mail Piece
Common formats for prospecting:
- Postcards (4x6 or 6x9): Low cost, high visibility, best for simple offers
- Self-mailers: Fold-over pieces that don’t need an envelope
- Letter packages: Envelope with letter, brochure, and reply device — highest response but highest cost
- Dimensional mail: 3D packages that stand out — expensive but very high open rates for B2B
Keep your creative simple: - Strong headline above the fold - Clear benefit statement - Compelling offer - Single call to action - Multiple response options (URL, QR code, phone number)
Step 5: Handle Fulfillment and Tracking
Before you mail, make sure you can: - Track responses — unique URLs, phone numbers, or codes per list/segment - Handle inbound volume — staff to answer phones, process web orders, or follow up on leads - Measure results — spreadsheet or CRM to record responses by list, segment, and date - Fulfill quickly — respond to inquiries within 24-48 hours while interest is hot
Step 6: Analyze and Scale
After your test results come in (allow 2-4 weeks for direct mail response):
- Calculate metrics for each list: response rate, cost per response, cost per acquisition
- Identify winners — which lists beat your target CPA?
- Rollout — scale winning lists to larger quantities
- Drop losers — don’t throw good money after bad
- Continue testing — always test new lists alongside proven ones
Common Prospecting Mistakes
- Mailing too few — 1,000 pieces isn’t a statistically valid test
- Testing too many variables — change one thing at a time so you know what worked
- Ignoring the list — spending all your budget on creative and skimping on data
- No follow-up — one touch is rarely enough. Plan 2-3 contacts.
- Measuring too early — direct mail responses trickle in over weeks, not hours
Ready to Start?
Browse our mailing list categories to find audiences that match your target market. Not sure where to begin? Contact us and tell us about your campaign — we’ll recommend lists, provide counts, and help you plan a winning test.