Contact · Three doors in
Pick the door that fits where you are.
Most contact is best routed through one of the three engagement tiers. They each carry a defined deliverable and a defined response time. If your reason for reaching out doesn't fit any of those, the general inbox is at the bottom of the page.
Not sure where to start? Choose Benchmark. It is the lowest-commitment path.
Buyer · Tier 1
Contract benchmark
Upload your current contract. We return a one-page benchmark in five business days. Free.
Run the benchmark →Buyer · Tier 2
Vendor shortlist
45-minute call. Three-vendor written shortlist within five business days.
Schedule shortlist →Buyer · Tier 3
Sourcing engagement
Full Cardinal Method, end to end. Supplier-paid. Defined milestones.
Start engagement →Everything else.
Press inquiries, partnership conversations, supplier inquiries, advisor inquiries, anything that doesn't fit the engagement tiers above.