Brevo + Klaviyo

Real-Time Brevo to Klaviyo Sync - Purpose-Built for Your Business

From contacts to profiles, our custom Brevo to Klaviyo integration maps your data precisely. Harvard-educated experts handle the build so your team stays focused on growth.

8+ hours/week

Saved weekly

12+

Years experience

250+

Total hours saved

One-way

Sync direction

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Why Connect Brevo to Klaviyo?

No single source of truth when campaigns live in two disconnected tools, so staff second-guess which system has the correct information

Reporting across Brevo and Klaviyo requires painful manual exports and spreadsheet merges

Brevo limitations compound the integration challenge: cRM capabilities, while improving, are basic compared to dedicated CRMs and better suited as a contact database than a sales pipeline tool

Manually copying data between Brevo and Klaviyo wastes hours every week that could be spent on revenue-generating work

Client engagement details in Brevo and time-tracking data in Klaviyo do not align, making billing inaccurate

Online orders in Brevo and in-store inventory in Klaviyo are never in sync, frustrating customers

How We Help

Connecting Brevo (marketing) with Klaviyo (marketing) is one of the most requested integrations among Australian Retail & E-commerce and Professional Services businesses. This integration eliminates the manual transfer of campaigns and tags data, reducing errors and freeing up your team to focus on growth. On the technical side, Brevo uses a REST + Webhook API with API key authentication, and Klaviyo authenticates via API key, which our team handles as part of the build.

Real-Time Visibility Across Teams

When a record updates in Brevo, every team member working in Klaviyo sees the change instantly. No lag, no stale dashboards, no conflicting reports.

Scalable Without Extra Headcount

As your data volume grows, the integration scales with you. No need to hire additional admin staff to keep Brevo and Klaviyo in sync, even as your business doubles.

Unlock Klaviyo Value

Klaviyo stands out because e-commerce data integration is best in class with Shopify, WooCommerce, and BigCommerce syncing purchase history, browse behaviour, and product data automatically. Integrating it with Brevo means your team gets this benefit with complete, accurate data flowing in automatically.

Custom-Built for Your Workflow

Unlike generic connectors, we build integrations tailored to how your business actually uses Brevo and Klaviyo. Custom field mappings, business rules, and error handling included.

Brevo to Klaviyo Use Cases

Connect Brevo campaigns to Klaviyo for attribution

Campaign engagement data from Brevo is pushed to Klaviyo so your team can see which campaigns drive real business outcomes. UTM parameters, conversion events, and engagement scores are all mapped.

Automated error handling and retry for Brevo/Klaviyo sync

When a sync between Brevo and Klaviyo fails due to a rate limit, network issue, or validation error, the integration retries automatically with exponential backoff. Your team is alerted only when intervention is genuinely needed.

Data Mapping

How data flows between Brevo and Klaviyo

Brevo	→	Klaviyo	Notes
Brevo Campaigns -> id	→	Klaviyo Campaigns -> id	Campaigns data synchronised between platforms
Brevo Lists	→	Klaviyo Lists	Tags and categorisation labels merged and deduplicated between systems.
Brevo Timestamps	→	Klaviyo Audit Log	Created and modified timestamps preserved for sync conflict resolution and compliance
Brevo Owner/Assignee	→	Klaviyo Owner/Assignee	Record ownership mapped between platforms using email address as the matching key
Brevo Record IDs	→	Klaviyo External References	Cross-reference identifiers stored on both records for bidirectional lookups and deduplication
Brevo Contacts	→	Klaviyo Custom Fields	Contacts data from Brevo stored in Klaviyo custom fields for reference
Brevo Templates	→	Klaviyo Templates	Templates records synchronised when created or updated in either platform
Brevo Campaigns	→	Klaviyo Campaigns	Campaigns records synchronised when created or updated in either platform
Brevo Automations	→	Klaviyo Custom Fields	Automations data from Brevo stored in Klaviyo custom fields for reference

Brevo + Klaviyo Integration FAQ

Most Brevo to Klaviyo integrations are completed within 2 weeks. We start with a discovery session to understand your specific workflow, then build and test the integration. Complex setups with custom business logic may take up to 4-8 weeks.

Absolutely. We design integrations with growth in mind, whether you are syncing 100 records or 100,000. Our architecture handles rate limiting (Brevo's API allows 12,000 requests per minute)), pagination, and queuing to ensure reliable performance at any scale.

Yes. We have built integrations for Retail & E-commerce businesses that rely on both Brevo and Klaviyo. The integration is customised to your industry-specific workflows, data structures, and compliance requirements. Book Free Assessment to discuss your specific needs.

Absolutely. Custom field mapping is a core part of every integration we build. Whether it is custom properties in Brevo or user-defined fields in Klaviyo, we map them precisely to your requirements. We can also transform data formats, apply business rules, and handle conditional mappings.

The most common data objects synced between Brevo and Klaviyo include campaigns, tags. We map each data type to its counterpart in the target system, including custom fields, metadata, and relationship data. The exact scope is tailored to your workflow during the discovery session.

Yes, we handle one-time historical data migrations alongside ongoing sync. We map your existing campaigns, validate data quality, and run test migrations before the final cutover. Most migrations complete within 4-8 weeks depending on volume.

Yes. All data is transferred over encrypted connections (TLS/SSL). We follow least-privilege API access, never store credentials in plain text, and log all sync activity for audit purposes. For Australian businesses with compliance requirements, we can implement additional safeguards.