At a glance
Ships-Within-3-Days Rate is the share of your orders dispatched inside Mercari’s recommended 3-day window. Let it sit below 90% for long and you risk losing the Fast Shipper badge and the search visibility that comes with it.
| What it counts | The percentage of completed Mercari orders in the period that were shipped within 3 days of purchase, as recommended by Mercari. |
| Sample type | Backend API data from Mercari, refreshed on the standard data refresh. |
| Why it matters | Fast dispatch drives the Fast Shipper badge, higher search placement, and better buyer ratings. Slipping below 90% puts all three at risk and can quietly suppress your listings. |
| Reading the value | Higher is healthier, and 90% is the line to stay above. Compare against the prior period to catch a developing slide early. |
| Currency | percent |
| Time window | 30D vsP |
| Alert trigger | <90% |
| Sentiment key | mer_ship_within_3d_rate |
| Roles | owner, operations |
Calculation
Vortex IQ divides the number of orders shipped within 3 days of purchase by the total orders in the trailing 30-day window, expressed as a percentage, and shows the change against the prior comparable period. Shipping is timed from purchase to the carrier’s first acceptance scan, so printing a label alone does not count as shipped. Orders still inside their 3-day window are excluded until they ship or the window closes.Worked example
A representative reading of Ships-Within-3-Days Rate for a typical Mercari reseller. A book reseller normally runs at 96%. On 18 Jun 26 the card reads 87% and is down versus the prior period, tripping the<90% alert. Looking back, a short trip meant several parcels missed their window. The seller catches up on the backlog and sets a reminder to mark vacation mode before the next trip, and the rate recovers above 90% within a week as old late orders age out of the 30-day window. Cross-reference Pending Shipment to see if a current backlog is about to drag the rate down again, and average review rating to check whether late dispatch has hurt feedback. When the rate dips, Vortex Mind traces upstream causes such as a fulfilment gap or a carrier delay, and Ask Viq answers plain-English questions like “which orders pushed my ship rate below 90% this month?”
Sibling cards merchants should reference together
| Card | Why merchants reach for it |
|---|---|
mer_pending_ship | Shows the current backlog that could push the rate down next. |
mer_revenue_at_risk | Quantifies the dollars exposed when dispatch slips past the window. |
mer_avg_review_rating | Reveals whether slow shipping has begun to harm buyer feedback. |
mer_return_rate | Indicates whether delays are leading to cancellations or returns. |
mer_total_revenue | Confirms whether a sales surge is straining your dispatch capacity. |
Reconciling against Mercari
Where to look in Mercari’s own dashboard: Mercari surfaces shipping speed through your seller profile and the Fast Shipper badge status, and individual order pages show the time from purchase to the first carrier scan. There is no single percentage shown the same way this card frames it, so reconcile by sampling recent orders against their ship-by performance. Why the Vortex IQ value may legitimately differ:| Reason | Direction | What to do |
|---|---|---|
| Period boundary. The rate uses a rolling 30-day window, so an old late order ages out and lifts the rate without any new action. | Variable | Match the period range. |
| Time zone. The 3-day window is measured in Mercari’s time zone, which can flip a borderline order between on-time and late. | Marginal | Confirm time zone match. |
| Filter scope. Shipping is timed to the carrier acceptance scan, not the label print, so a printed-but-undropped label counts as not yet shipped. | Variable | Match filter settings. |