PREVENTABLE
“Klaviyo's importer dropped every custom field we had.”
Corridor’s answer
Every field is mapped before a single row moves — unmapped fields land in a NOT CROSSING tray, never silently dropped.
MAILCHIMP → KLAVIYO · 48,112 ROWS · 0 LOST ··· STRIPE → SPREEDLY · 12,940 ROWS · 0 LOST
SAAS TO SAAS→MAILCHIMP · STRIPE · SHOPIFY · HUBSPOT
Your data is cargo.
Move it like it.
Native importers truncate fields, drop metadata, and duplicate your subscribers. Corridor maps the schema, validates every row through inspection gates, runs the crossing — and only then pushes to production. With a rollback shadow copy, always.
CROSSED: 12,847 ROWS
HELD: 214
QUARANTINED: 3
HELD: 214
QUARANTINED: 3
98.3% cleanaudit-logged
Every migration horror story is a missing inspection.
PREVENTABLE
“Subscribers got re-opted-in. 400 unsubscribes in an hour.”
Corridor’s answer
Consent fields are threaded like everything else — mapped, validated, and held at the gate if the source value doesn't resolve cleanly.
PREVENTABLE
“The consultant quoted $12K and six weeks.”
Corridor’s answer
A hand-mapped corridor runs in hours, not weeks — priced per crossing, not per hour of someone's time.
How a crossing works
Five gates. Nothing crosses unseen.
Every corridor runs the same five stations — connect read-only, map the manifest, dry-run the crossing, hold what needs a decision, then push for real.
01CONNECT
Read-only, first
Both API keys, read-only scopes shown explicitly. Nothing can be written until you say so.
02MAP
Schemas auto-matched
Corridor drafts the manifest. You confirm it — approve the lines that are right, re-route the one that needs your judgment.
03DRY-RUN
A ghost crossing first
The first rows cross a ghost bridge. Nothing touches production until you've seen the report.
04VALIDATE
Held at the gate, shown to you
Type mismatches, dropped fields, duplicate keys — every issue named in plain words, never buried in a log file.
05PUSH
The real crossing
Audit-logged, counters running live. Rollback armed for 30 days — nothing about this crossing is unrecoverable.
Corridors, not connectors
We build deep, not wide.
Every corridor is hand-mapped by someone who has crossed it — not a generic field-guesser pointed at an API doc.
MAILCHIMP → KLAVIYO
the flagship route · 48k avg rows
route license $249/yrSTRIPE → SPREEDLY
stored payment methods
route license $199/yrSHOPIFY → MEDUSA
catalog + order history
route license $199/yrHUBSPOT → ATTIO
contacts + deal history
route license $199/yrSTRIPE → CHARGEBEE
subscriptions + invoices
route license $199/yrDon’t see your stack?
Petition a route →The certificate
The document your CFO will ask for.
Every completed crossing gets a bill of lading — the reconciliation your CFO, your client, and your future self will ask for.
Certificate of migration
Mailchimp → Klaviyo
ROWS SHIPPED · 48,112
TRANSFORMED · 214 (log attached)
LOST · 0
VALIDATED · 2026-07-17
CHECKSUM · a91f…e2
ROLLBACK ARMED UNTIL · 2026-08-16
Retain for audit
Pricing
A freight tariff, not a quote.
Per crossing
$199 from
$199 for 0–10K rows · $399 for 10K–100K · $699 for 100K+. One dataset, one crossing, priced by size.
Open a corridorMOST CORRIDORS
Route license
$249 /yr flagship
Unlimited crossings on a route for a year. $199/yr on every non-flagship corridor. The cheapest way to migrate more than once.
License a routeEnterprise
$1,499 /yr
Custom corridors hand-mapped for your stack, white-glove crossings, and an SLA your CFO can point to.
Talk to usA CONSULTANT QUOTES $5–20K FOR ONE CROSSING. DO THE MATH AT THE GATE.