Automatic replacement can remove a new address not yet present in a registry.
Address checks: distinguish format from deliverability
Valid postal formatting does not prove an address exists. Show real-source suggestions as choices rather than silent corrections.
Research context: Baymard · Address validation ↗
Show original and suggested addresses together when correction is needed. Define handling for unknown addresses.
Try the pattern
Task and expected result
- 01
Use 123: receive a postal format error.
- 02
Use 0001: accept formatting without claiming deliverability.
- 03
In your integration, test an unknown address while retaining the original.
How to investigate value
Measure confirmed, deduplicated outcomes per eligible checkout start. Define paid orders and accepted credit orders separately.
Watch for side effects
Payment errors, duplicate orders, incorrect totals, unclear arrival dates and discount cost. A pay click is only an attempt.
This is a proposed investigation, not a measured result. Choose one hypothesis and define the audience before testing.
Build a measurement plan for this concept ↗