How long will a Customer.io migration take?

Answer seven questions about the current setup and get a planning range, plus the latest start date that still finishes the migration before the current contract ends. Built by a certified Customer.io partner from real migration data.

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Drives how much of the existing build can be ported rather than rebuilt from scratch.
Active flows, not one-off sends.
95
Total across all automations, including transactional.
120
A few layouts with many variants means one module library covers most of the work.
Other active channelsEach one needs its own setup, templates and testing.
Bigger databases mean more identity and consent reconciliation, and a longer sending reputation warmup that extra people cannot compress.
The biggest single swing in the estimate.
Optional. Adds the latest start date that still finishes in time.
Estimated timeline
Dedicated migration pod

A named team working only on this migration.

9–11weeks
FoundationBuildValidation
Shared resources

The workload managed amongst multiple projects.

13–15weeks
Latest safe start date
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What this assumes
  • A four week foundation at the start of every migration. Build work runs inside it, not after it.
  • Two weeks of validation and parallel run at the end.
  • The faster range needs a genuinely dedicated resource. Without one, the shared range applies.
  • Push migrations also depend on how quickly an audience updates to an app version carrying the Customer.io mobile SDK.
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A planning range, not a quote. Built from LifecycleX delivery history to give early conversations a credible shape. Scope gets confirmed in a short working session before any date is committed.