What you'll need
Three accounts. Free or close to it.
n8n
Free self-hosted, or n8n Cloud starting $20/mo
OpenAI API key
Pay-as-you-go, ~$0.0001 per message
Twilio
$1/mo for a number, ~$0.008 per SMS in US
Practice management software
API access to filter by last_visit_date and recall_type
The math
What this is worth, conservatively
Recovery rate on overdue recall list with automation
20 to 30%
Practice with 200 overdue patients, 30% recovered
60 patients
$200 hygiene visit average × 60 recovered
$12,000 one-time
Then ongoing as the workflow runs daily
~$3,000/mo
Cost to run this template forever
~$60/year
Numbers based on industry benchmarks for dental and veterinary recall recovery with SMS automation. Your initial recovery wave is the largest payout; ongoing capture is steady once the daily run is stable.