Switch to Klaviyo Without Missing a Beat
Migrating ESPs is stressful — lost data, broken flows, deliverability dips. We handle every detail of your migration to Klaviyo, from subscriber data to flow rebuilds to warm-up protocols, so you gain capabilities without losing momentum.
What's Included
Our Process
Migration Planning
We audit your current ESP — every list, flow, template, segment, and integration. This creates a complete migration checklist so nothing gets left behind.
Data Migration
Subscriber lists, engagement history, custom properties, tags, and consent records are exported and imported into Klaviyo with full data integrity validation.
Rebuild & Enhancement
We recreate your flows and templates in Klaviyo — not just copy them, but improve them using Klaviyo-specific features your old ESP did not have. Migration is an upgrade, not just a move.
Warm-Up & Cutover
We execute a structured warm-up protocol, gradually shifting sending volume from your old ESP to Klaviyo. This protects your sender reputation and ensures uninterrupted inbox placement.
Validation & Decommission
Once Klaviyo is fully live and performing, we verify everything is working correctly and help you decommission your old ESP. Clean break, no loose ends.
Results We've Delivered
Tools We Use
Frequently Asked Questions
All of them. Mailchimp, Omnisend, Drip, HubSpot, ActiveCampaign, Constant Contact, Sendlane, Brevo — we have migrated from every major ESP to Klaviyo. The process adapts to each platform but the outcome is the same.
No. We export and import engagement data — opens, clicks, purchases, and custom events — so your Klaviyo account starts with full historical context. This is critical for segmentation and deliverability.
Typically 10-15 business days for a standard migration. Complex accounts with extensive automations and integrations may take 3-4 weeks. We run parallel sending during the transition so you never miss a send.
Not if done correctly. Our warm-up protocol gradually shifts volume to Klaviyo while maintaining sending from your old ESP. ISPs see a smooth transition, not a sudden change. Most clients see deliverability improve after migration.
Absolutely — that is one of the biggest benefits. Instead of just replicating your old setup, we rebuild flows with Klaviyo best practices, add missing automations, and optimize segments. You get a better email program, not just a different platform.
Ready to Get Started with ESP Migration?
Book a free strategy call and let's build your email revenue engine.