The mail recall system is generally considered the least expensive type of preventive recall system in a dental practice. It requires no dedicated staff time for phone calls, no complex software subscriptions, and the per-patient cost can be as low as $0.50 to $0.75 when postcards are printed and mailed in moderate batches. That said, “least expensive” depends on whether you’re looking at upfront cost per contact or overall value when you factor in patient response rates and staff time.
The Four Main Recall Systems
Dental practices typically choose from four types of preventive recall systems: the advanced appointment system, the telephone recall system, the mail recall system, and the electronic (email or text message) recall system. Each has a different cost profile, and many offices use a combination rather than relying on a single method.
The advanced appointment system schedules the patient’s next visit before they leave the office. It costs almost nothing in materials since no postcard, phone call, or software is needed. The trade-off is that it requires consistent effort at checkout and still needs a backup method for patients who cancel or don’t show.
The telephone recall system involves staff calling patients when they’re due for a visit. It’s effective because it creates a personal connection, but it’s also the most labor-intensive option. A front desk team member spending hours making calls represents a real payroll cost, even if there’s no postage or software fee attached.
The mail recall system sends postcards or letters reminding patients to schedule. It’s the traditional low-cost option and the one most often cited as the least expensive in dental assisting and office management coursework.
The electronic recall system uses email, text messages, or automated software to send reminders. Setup costs vary widely depending on the platform, but once running, the per-message cost is extremely low.
Why Mail Is Considered the Cheapest
A single first-class postcard costs $0.56 in postage as of 2026. Add printing costs of $0.10 to $0.70 per piece, and you’re looking at roughly $0.50 to $1.00 per patient contact for small to medium batches. For a practice mailing 1,000 to 2,500 postcards, the all-in cost drops to about $0.50 to $0.75 per piece. Practices that mail in larger volumes or qualify for bulk marketing mail rates can push that even lower, to around $0.43 per piece in postage alone.
Compared to the telephone system, mail doesn’t require a staff member to sit on the phone for hours. A batch of postcards can be prepared, addressed, and dropped off at the post office in a fraction of the time it takes to call the same number of patients individually. There’s no back-and-forth, no voicemails, no callbacks. That reduction in labor is the main reason mail wins on cost in a straightforward comparison.
How Electronic Systems Compare
Electronic recall through email and text messaging has changed the math considerably. The per-message cost of an email is essentially zero, and text messages through a practice management platform cost only a few cents each. The expense comes from the software subscription. A platform like Open Dental, for example, charges $75 per month for its web-based recall scheduling feature, with basic reminder messages included in the standard support plan at no extra charge.
For a practice with 500 or more patients due for recall each year, that monthly software fee quickly becomes cheaper per contact than printing and mailing postcards. At $75 per month ($900 per year), a practice reaching 1,000 patients pays about $0.90 per patient annually through the software, comparable to mail. But the software also eliminates the time spent preparing, printing, and mailing physical cards. For practices already paying for a dental management platform, recall reminders may come bundled at little or no additional cost, making electronic systems functionally cheaper than mail in many real-world setups.
The Advanced Appointment Advantage
If you define “least expensive” purely as the lowest dollar outlay, the advanced appointment system technically wins. Scheduling the next visit before the patient leaves costs nothing in materials, postage, or software. It’s built into the checkout workflow that’s already happening. This is why some dental office management references list the advanced appointment system, not mail, as the least expensive option.
The limitation is that it rarely works as a standalone system. Patients cancel, forget, or need to reschedule months later. Most practices pair advanced appointments with a mail or electronic backup for patients who fall off the schedule, which means the real cost is whatever that backup system costs.
Cost vs. Effectiveness
The cheapest system isn’t necessarily the best investment. Research on patient recall across dental and endodontic settings shows that only about 56% of patients return for scheduled follow-up appointments overall, with return rates ranging from 27% to 100% depending on the practice and method used. The ideal return rate for meaningful results is above 80%.
A mail postcard that costs $0.65 but gets ignored is more expensive per returning patient than a $0.90 text message that actually brings someone back. Phone calls, while the most labor-intensive, tend to produce higher response rates because they create urgency and allow immediate scheduling. Many practices find that a layered approach (advanced appointment first, then an automated text or email, then a postcard, then a phone call for non-responders) captures the most patients at a reasonable total cost.
For exam purposes or a straightforward comparison of system types, mail recall is the standard answer for the least expensive preventive recall system. In practice, electronic messaging has largely closed that gap or surpassed it, especially for offices already invested in practice management software.