01
Foundation
EDD V1 created the delivery promise.
It turned transit time into a date customers could understand. That foundation gave us something real to measure and improve.
Built and live
More accurate delivery promises.
EDD V1 gave customers a date. EDD V2 nearly doubled exact-day accuracy in the reviewed set, while adding ranges and confidence for checkout.
Original exact-day match
40%
->
2x accuracy
After recalculation
82%
The timeline
From one date to a stronger checkout promise.
The work did not replace the first estimate. It strengthened it, proved the change, and moved the result closer to the buyer.
02
Review
One date could not carry all the uncertainty.
Delivery varies by postcode, carrier, pickup timing, service and calendar. In the reviewed sample, the original date matched the delivered day 40.75% of the time.
03
Recalculation
EDD V1's promise became more accurate.
After the bug fix and after-pickup recalculation, exact-day match rose to 81.63% in the same assessment.
04
EDD V2
Confidence now travels with the estimate.
EDD V2 passes confidence levels to merchants, giving them more transparency when choosing which delivery promise to show. Percentiles, actual dates and fallbacks make that promise more usable.
05
Display logic
The promise adapts to confidence.
EDD V2 returns the most precise promise the available data can support. High confidence shows one date. Medium confidence shows a date range. Low confidence returns a configured fallback range.
06
V3 Quote API
EDD now powers V3 Quote API.
V3 Quote API now returns EDD with each quote. The new object is additive, so existing integrations keep their transit-time string while newer surfaces use the richer promise.
07
Shopify checkout
EDD now powers Shopify checkout.
Shopify Connect requests rates through V3 Quote API. The response now carries EDD into checkout, so Shopify merchants can show a delivery range at the moment a buyer chooses shipping.
Shopify checkout->
Shopify Connect->
V3 Quote API->
EDD
08
Now
Built. Released. Ready to widen.
EDD V2 and V3 Quote API were released on July 6. The next motion is a controlled Track page rollout and another accuracy check.
The outcome
A stronger promise. A wider surface.
Merchants get range, confidence and fallback behaviour they can use.
Buyers get clearer delivery dates in the checkout they already use.
What this unlocks
One EDD signal can now travel across the journey.
Product pages, checkout and tracking can draw from the same underlying promise. The experience becomes more consistent as each surface adopts it.