"How to measure whether a service reminder brought a customer back"
"Source","https://bluefinchadvisors.com/blog/how-to-measure-whether-a-service-reminder-brought-a-customer-back"
"Basis","This planning scenario uses the values entered. It is not an industry benchmark or a quote."

"Inputs","Value","Unit"
"Reminded eligible customers","100","number"
"Reminded customers with a completed return","30","number"
"Comparison eligible customers","100","number"
"Comparison customers with a completed return","20","number"
"Selected campaign costs","60","currency"

"Results","Value","Unit"
"Reminded customer return share","30","percent"
"Comparison return share","20","percent"
"Return-share difference (percentage points)","9.999999999999998","number"

"Calculation detail","Value","Unit"
"Selected cost per observed reminded return","2","currency"
"Reminded customers without an observed return","70","number"

"Assumptions"
"Distinct customers, one service campaign and equal observation windows."
"The comparison design must be reviewed separately."
"Returns are observed completed visits, not proven additional visits."
"Selected costs exclude anything already allocated elsewhere."

"Result notes"
"Do not withhold necessary service or safety communication for a marketing comparison."
"Zero denominators produce unavailable values."

"Sources"
"FTC: Auto Repair Basics","https://consumer.ftc.gov/articles/auto-repair-basics"
"HubSpot: Create tasks","https://knowledge.hubspot.com/tasks/create-tasks"
"BlueFinch: Customer loyalty terms and availability","https://bluefinchadvisors.com/toolbox/customer-loyalty"