Klaviyo Migration
Still on Mailchimp? How much revenue is that costing you every month?
You know you need to switch. Every eCommerce marketer you follow recommends Klaviyo. Your Shopify apps work better with it. The segmentation is deeper. The flows are more powerful. The data is richer. But you've been putting it off because migration sounds like a nightmare.
And honestly? It can be. Botched migrations lose subscriber data. Broken domain authentication tanks deliverability for weeks. Flows that worked on Mailchimp don't translate 1:1 to Klaviyo. Segments need rebuilding from scratch. If you do it wrong, you'll spend months recovering instead of growing.
That's why you hire a Klaviyo Gold Partner to do it. We've migrated brands from Mailchimp, Omnisend, Constant Contact, Drip, and a dozen other platforms to Klaviyo. We know every pitfall because we've navigated them 100+ times. Your list, your segments, your flows, your domain authentication — all transferred, rebuilt, and verified before we flip the switch. Zero data loss. Zero deliverability dips. And a Klaviyo account that's already better than what you had on day one.
100+
Migrations Completed
0
Data Loss Incidents
2-3 Weeks
Avg. Migration Time
Gold
Klaviyo Partner
Why Klaviyo matters for eCommerce
Migrating to Klaviyo isn't just moving your email list to a new platform. It's rebuilding your entire email infrastructure — subscriber profiles, consent records, engagement history, flow automations, templates, segments, and domain authentication. Done right, it's a fresh start with better tools and cleaner data. Done wrong, it's months of deliverability problems and lost revenue. We've done it 100+ times and we get it right every time.
What we do on Klaviyo
Full subscriber list migration
Every subscriber transferred with their full profile data — email, name, consent status, engagement history, custom properties, and tags. We clean the list during transfer, removing hard bounces and obvious spam traps so you start with a healthier list than you had.
Flow rebuild and upgrade
Your existing flows don't just get copied — they get rebuilt and improved. We recreate every automation in Klaviyo with better triggers, smarter conditional splits, and optimized timing. Most clients end up with more flows than they had because Klaviyo enables automations their old platform couldn't handle.
Segment reconstruction
Segments rebuilt using Klaviyo's more powerful criteria — purchase behavior, browsing data, predictive analytics, and engagement scoring. Your segments will be more precise and more actionable than anything you had before.
Domain authentication and warm-up
SPF, DKIM, and DMARC records configured correctly. Dedicated sending domain setup. Warm-up protocol to protect your sender reputation during the transition. We monitor deliverability daily during the first 2-4 weeks to catch and resolve any issues.
Template recreation
Your email templates rebuilt in Klaviyo's editor — responsive, mobile-first, and optimized for Klaviyo's dynamic content blocks. We don't just copy your old designs. We improve them.
Parallel running period
We run both platforms simultaneously during transition to ensure nothing falls through the cracks. Klaviyo handles new flows and campaigns while the old platform winds down. Clean cutover with zero gap in email revenue.
Why GOSH Digital for Klaviyo
Migration is where most agencies and freelancers screw up. They export a CSV, import it into Klaviyo, and call it done. Then the client wonders why their open rates tanked, their flows aren't triggering, and half their subscribers are missing engagement history.
We've completed 100+ platform migrations to Klaviyo — from Mailchimp, Omnisend, Constant Contact, Drip, ActiveCampaign, and others. We have a documented 23-step migration process that covers every data point, every domain record, every flow logic, and every segment criteria. We've never lost subscriber data. We've never caused a deliverability crisis. And every client ends up with a better Klaviyo account than what they had before the migration.
Questions our best clients asked first
Ready to finally make the switch to Klaviyo?
Book a free migration planning call. We'll review your current platform, map out the migration timeline, and give you a clear picture of what the transition looks like — including costs, timing, and what your Klaviyo account will look like on day one.
Pick a Time15 minutes. No pitch deck. Just your data and our honest take.
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