Door Drop Barcelona: GPS-verified leaflet distribution with photo proof
CARTO delivers leaflets into residential mailboxes across Barcelona with GPS-tracked routes, photo proof of every block, and QR scanning that measures real response. You see exactly where your flyers went, when, and what engagement they generated - all in a live dashboard.
What is GPS-verified door drop and why does it matter
Door drop - the delivery of printed leaflets directly into residential mailboxes - remains one of the most effective offline channels for local audience reach. The problem has always been accountability: you pay for a distribution and receive a report you cannot verify.
GPS-verified door drop removes that blind spot. The route is recorded as it happens, photos document each block, and a QR code on the leaflet connects the physical delivery to a measurable digital action. The campaign becomes auditable end to end.
How CARTO door drop works
Neighborhood targeting
We cross your ideal customer profile with Barcelona demographic data - population, income, age, density - to select the zones with the highest concentration of your audience.
Live GPS route logging
The distributor's phone records the full GPS route throughout the shift. The track is stored unedited and displayed on your dashboard as a street-level map.
Photo proof per block
Each mailbox block and building entrance is photographed during the drop. Photos are geotagged at the moment of capture and linked to the GPS route.
QR response tracking
Every leaflet carries a QR code. Scans are recorded by time and zone, adding a measurable engagement layer on top of the verified distribution.
GPS door drop vs standard leaflet distribution
Standard distribution
- You pay and trust it happened
- No proof of which streets were covered
- No response measurement
- No data to report or export
CARTO door drop
- Full GPS route, street by street
- Photo proof tied to GPS coordinates
- QR scans by zone and time window
- Exportable dashboard for your report
What you see in your dashboard
The dashboard updates in real time during the distribution shift. Once the campaign closes, all data is archived and available for export.
- Street-level GPS route map for each shift
- Geotagged photo gallery ordered by block and time
- QR scan count by zone and time window
- Coverage summary: completed vs planned zones
- Exportable data for your campaign report
Frequently asked questions about door drop in Barcelona
What makes CARTO's door drop different from standard leaflet distribution in Barcelona?
Standard distribution hands you a paper invoice and an estimated coverage percentage. CARTO records the full GPS route of every distributor, photographs each mailbox block as the drop happens, and tracks QR scans by zone and time. You get an auditable record, not a trust exercise.
How does GPS verification work in practice?
Each distributor carries a phone that logs their GPS route unedited throughout the shift. That route is stored and displayed on your dashboard as a street-level map. If a street was missed or a shift ended early, the gap shows up in the data - no guesswork.
What does the photo proof cover?
As the distributor works through each block, they photograph the mailbox banks and building entrances. Photos are geotagged at the moment of capture, so each image is tied to a specific coordinate on the route map. The map and the gallery tell the same story from two angles.
How does QR tracking complement GPS verification?
GPS proves the drop happened. QR measures the response. Each leaflet carries a unique QR code that records scans by time and approximate zone. Together, the two layers show you where the material was delivered and how much engagement it generated.
What is the minimum order for a GPS-verified door drop in Barcelona?
The minimum is 5,000 leaflets. That volume creates enough density per zone for the dashboard data to be meaningful and for the GPS route to cover a real, mappable area.
Which neighborhoods in Barcelona can CARTO cover?
CARTO distributes across all Barcelona districts, from Gracia and Eixample to Sarria-Sant Gervasi, Poble Nou, Sant Marti, and beyond. Zone selection is based on demographic data matched to your target audience, so you only pay for coverage where your customers actually live.
Further reading: GPS and QR tracking technology · how to target Barcelona neighborhoods
Ready to run a door drop you can actually verify?
From 5,000 leaflets, with GPS-verified routes, photo proof per block, and live QR tracking. We price by neighborhood.