Promotional or transactional mail sent through the postal service to a targeted list of recipients.
Definition
Direct mail is any physical promotional or transactional message delivered through a postal carrier — most commonly USPS in the United States — to a targeted list of recipients. Common formats include postcards, letters, self-mailers, catalogs, and dimensional packages. Direct mail is one of the oldest forms of marketing and remains one of the most reliable channels for local service businesses.
Why it matters
For small businesses with under $1M in revenue — dental practices, optometrists, HVAC contractors, med spas, vets — direct mail consistently outperforms digital ads on response rate and ROI. While email and social ads compete in crowded inboxes and feeds, a postcard arrives in a quiet space (the mailbox) where 98% of households still check daily. It also bypasses ad blockers, spam filters, and algorithm changes, giving you a stable, predictable channel.
Example
A dental practice mails 800 recall postcards to lapsed patients at $0.79 each ($632 total). At a typical 5% house-list response rate, 40 patients return for cleanings averaging $300 each — $12,000 in revenue against a $632 spend, a 19:1 return.
Related terms
- Postcard Marketing — A direct mail strategy using postcards — uncovered, single-piece mailers — to reach cus...
- Direct Mail Response Rate — The percentage of mail recipients who take the desired action — call, visit, scan a QR ...
- House List — A mailing list of your existing or past customers, built and owned by your business.
- USPS First-Class Mail — The USPS's premium mail class — fastest delivery, address forwarding, and free return o...
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