Migrate from Braze to Customer.io: The Operational Simplification Guide

Moving from Braze to Customer.io is a less common migration path — and for that reason, it tends to be mischaracterized. It is not a downgrade. It is an operational decision.

Braze is a genuinely powerful platform. Its Canvas Flow builder, Connected Content API, and mobile SDK depth are real capabilities that justify the platform's enterprise pricing for teams that use them. The teams migrating from Braze to Customer.io are the ones who have concluded — usually after careful analysis — that their program doesn't actually need the capabilities that make Braze expensive to operate, and that Customer.io's lighter, more developer-friendly model will serve their lifecycle program better at a more sustainable cost.

The decision usually comes down to one of three things: Braze's MAU-based pricing has become difficult to justify for a program that doesn't heavily use mobile push or Connected Content; the team wants a more operator-accessible tool without Braze's platform administration overhead; or the lifecycle program is primarily email and behavioral automation, where Customer.io's architecture is equally capable at significantly lower operational complexity.

At Propel, we work with both platforms. We don't have a preference — we have a judgment about fit. This guide covers the migration honestly, including where Customer.io is the stronger fit and where teams should think carefully before making the move.

When This Migration Makes Sense

Your program is primarily email and behavioral automation. Braze's full capability set — Canvas Flow's cross-channel depth, Connected Content real-time API calls, mobile SDK push and in-app messaging — is compelling. If your program uses 20% of that capability set and pays for 100% of the platform cost, the fit has a problem. Customer.io's email-first, event-driven model covers the 20% with less operational overhead and at a more favorable price for programs where MAU count makes Braze's pricing structure difficult to justify.

You want developer-operator control, not enterprise platform administration. Braze rewards teams with dedicated platform administrators, Canvas architects, and SDK engineers. Customer.io rewards teams with one or two lifecycle operators who are comfortable with Liquid, APIs, and event schema design. If your team is the latter, Customer.io's operational model fits better regardless of feature comparison.

You're not using Connected Content or Braze's mobile SDK depth. These are Braze's most differentiated capabilities. If your program doesn't use Connected Content for real-time API-driven personalization, and if push and in-app messaging are either absent from your channel mix or can be handled via Customer.io's mobile SDK, the capability case for Braze narrows significantly.

The migration does not make sense if: your program depends on Braze's Canvas Flow for complex cross-channel orchestration with real-time behavioral branching across email, push, in-app, and SMS simultaneously; if Connected Content is powering a meaningful portion of your personalization; or if your mobile app channels are primary lifecycle touchpoints that require Braze's SDK depth.

The Architecture Difference: Braze vs. Customer.io

Braze's model: Enterprise orchestration platform. Custom Attributes and Custom Events on user profiles. Canvas Flow handles cross-channel lifecycle logic with Audience Paths, Action Paths, and Experiment Paths. Connected Content makes live API calls at send time. Currents streams engagement events to data warehouses. Built for multi-channel complexity at enterprise scale.

Customer.io's model: Behavioral messaging platform. Attributes and Events on People profiles. Campaigns trigger on Events. Journeys handle multi-step sequences with conditional branching. Liquid templating handles personalization. Data Pipelines enable warehouse-to-Customer.io data flows. Built for event-driven lifecycle precision with developer-operator accessibility.

The migration consequence: Braze Custom Attributes map to Customer.io Attributes. Braze Custom Events map to Customer.io Events. Braze Canvases must be rebuilt as Customer.io Campaigns and Journeys. Connected Content API calls must be replaced with Liquid logic using Customer.io's data capabilities or with webhook actions that pull external data. Channels not supported in Customer.io — native in-app messaging at Braze's depth, Content Cards — require alternative solutions.

Both platforms use Liquid, but with different variable conventions. Braze's {{ custom_attribute.${attribute_name} }} becomes {{ customer.attribute_name }} in Customer.io. Every personalization tag requires remapping.

What Transfers and What Doesn't

Transfers With Mapping ✅

User profile data. Braze Custom Attributes map to Customer.io Attributes. Document every Custom Attribute in active use across Canvases, segments, and Liquid personalization. External User IDs in Braze map to Customer.io's id field.

Email and SMS suppression. Braze email subscription state (email_subscribe: unsubscribed) maps to Customer.io global unsubscribe. Braze SMS Subscription Group opt-outs map to Customer.io SMS topic suppression. Both move before active contacts.

Custom Event schema (with review). Braze Custom Events map conceptually to Customer.io Events. However, the migration is an opportunity to review your event schema — some Braze Custom Events may have been created to work around Canvas entry condition requirements that don't exist in Customer.io's Campaign trigger model. Clean the schema during migration rather than replicating it.

Must Be Rebuilt 🔄

Every Canvas becomes a Campaign or Journey. There is no import path. Braze Canvases must be rebuilt as Customer.io Campaigns — with the trigger logic adapted from Braze's Canvas entry conditions to Customer.io's event-trigger model. Canvases that used Audience Paths for multi-cohort branching can be rebuilt in Customer.io using segment entry conditions or Journey branches.

Connected Content → Liquid data or webhook actions. Connected Content API calls at send time must be replaced. Options in Customer.io: use Customer.io's Liquid data access (if the data already exists as Attributes or event properties), or use webhook actions earlier in the Journey to pull external data and store it as Attributes before the message send step. The replacement path depends on how the Connected Content was being used.

Liquid personalization tags. Every Braze Liquid tag must be remapped to Customer.io's variable convention. Braze's {{ ${first_name} }} becomes {{ customer.first_name }}. This is a systematic remapping, not a rebuild.

Left Behind ❎

Braze Canvas Flow's full cross-channel depth. If your program used Canvases that coordinated email, push, in-app messaging, and SMS in a single workflow with real-time behavioral branching across all channels simultaneously — that specific capability is not replicated in Customer.io at the same depth. Evaluate channel by channel whether Customer.io's mobile SDK and push support meets your requirements before committing to this migration.

Content Cards. Braze Content Cards have no direct Customer.io equivalent. If Content Cards are a significant lifecycle touchpoint, factor this into the migration decision.

Braze Currents. Braze's real-time event streaming to data warehouses is replaced by Customer.io's Data Pipelines product and its reporting webhooks. The data infrastructure is different — confirm that Customer.io's data export capabilities meet your analytics team's requirements before migration.

The Canvas-to-Campaign Rebuild

This is where the Braze-to-Customer.io migration diverges most from other Customer.io migrations. Braze teams are coming from a more complex orchestration tool, not a simpler one. The rebuild is not about adding sophistication — it's about translating sophistication from one paradigm to another.

Audience Path → segment entry conditions. Braze's Audience Paths allow a single Canvas to split immediately into multiple audience tracks based on segment membership. In Customer.io, this is achieved through Journey branches that check Attribute conditions at entry. The logic is equivalent; the visual structure differs.

Action Path → wait-until with event conditions. Braze's Action Paths hold users for a defined window and branch based on whether they perform a specific action. Customer.io's Journey "wait until event or time" step does the same thing — hold the person until they fire a qualifying event, then branch on what happened. This is actually where Customer.io's Journey builder is most comparable to Braze Canvas for lifecycle-specific logic.

Connected Content → attribute-based or webhook personalization. The most creative part of the Canvas rebuild. For Connected Content calls that pull relatively static data (user account details, plan information), the data should already exist as Customer.io Attributes. For calls that pull truly dynamic real-time data (live pricing, recommendation engine output), a webhook action earlier in the Journey can fetch and store the data as an Attribute before the message is sent.

Migration Checklist: Braze to Customer.io

Pre-Migration Audit

• Inventory all active Canvases — trigger type, channel mix, entry volume, 30-day performance.
• Identify any Canvas that depends on Connected Content — assess the replacement approach for each.
• Identify any Canvas using push, in-app messaging, or Content Cards — confirm Customer.io covers these channels for your use case.
• Map all Custom Attributes to Customer.io Attribute schema.
• Review and clean Custom Event schema — retire events that were Canvas workarounds.

Data Migration

• Export email suppression — import to Customer.io global unsubscribe first.
• Export SMS opt-outs — import to Customer.io SMS topic suppression.
• Export active user profiles with all Custom Attributes — import as Customer.io People.
• Segment import by engagement tier.

Technical Setup

• Validate Customer.io API and SDK instrumentation — confirm events fire with correct properties.
• Configure sending domain — DKIM, SPF, DMARC. Reference email deliverability channel health standards.
• Configure Customer.io Data Pipelines if warehouse integration is required.
• Assess Customer.io mobile SDK setup if push notifications are in scope.

Campaign Rebuild and Go-Live

• Rebuild Canvases as Customer.io Campaigns — convert Audience Paths to segment branches and Action Paths to wait-until steps.
• Rebuild Connected Content logic — use attribute-based or webhook-based replacements per the audit.
• Remap all Braze Liquid tags to Customer.io Liquid convention.
• QA every Campaign before activating — test trigger conditions, personalization, and branching.
• Deactivate Braze Canvases as Customer.io Campaigns go live.
• Deliverability warm-up — 4–6 weeks, engaged segment first.

Stakeholder Expectations

Lifecycle team: Budget 10–14 weeks for a Braze migration of typical enterprise complexity. The Canvas rebuild and Connected Content replacement are the primary time investments. Teams with push-heavy programs should assess Customer.io's mobile capabilities carefully before finalizing migration scope.

Engineering: Customer.io's API instrumentation is lighter than Braze's SDK requirements. If push and in-app messaging are in scope, Customer.io's mobile SDK requires its own instrumentation — plan accordingly. Our events and attributes architecture service manages the schema design and instrumentation spec.

Leadership: The financial case for this migration is often the primary driver. Use the customer retention impact calculator alongside your Braze contract renewal analysis to validate the ROI. The migration cost should be compared against the platform cost savings over 12–24 months, not just the immediate migration investment.

Working With Propel

Propel is a certified Customer.io partner. We are also a Braze-certified partner — which means we bring genuine bilingual platform fluency to this migration. We can accurately assess whether your program truly needs Braze's capabilities or whether Customer.io is genuinely the right fit, without a bias toward either outcome.

Our migration practice covers Connected Content replacement strategy, Canvas-to-Campaign rebuild, and the lifecycle strategy review that should accompany every major platform transition.

For the platform-agnostic migration framework, see the migrate to Customer.io guide. Then talk to us about whether the migration is the right decision for your specific program.