Constant Contact to Klaviyo Migration, Without Losing a Subscriber
Moving from Constant Contact to Klaviyo is a manual migration. Klaviyo has no pre-built Constant Contact integration for new accounts, so subscribers, unsubscribes and engagement tiers are exported from Constant Contact and imported into Klaviyo by hand, with suppressions checked before anything sends. If you text customers, your number changes too: Constant Contact's local numbers can't be ported to Klaviyo. Then autoresponders are rebuilt as Klaviyo flows, templates and forms are rebuilt, and sends warm up from your most engaged contacts. A typical move takes 2-3 weeks.
Still comparing? Read Klaviyo vs Constant Contact →
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Why brands move from Constant Contact to Klaviyo.
Constant Contact has limited automation
Klaviyo gives you the full ecommerce flow library: welcome, abandoned cart, post-purchase, replenishment, win-back, browse abandonment. Constant Contact has basic autoresponders.
Segmentation depth gap
Constant Contact segments by basic list/contact properties. Klaviyo segments by behaviour, predictive properties, product events, in real-time.
Native ecommerce integration
Klaviyo connects natively to Shopify and other platforms. Constant Contact integrates but the data depth is shallower.
Reporting that actually shows revenue
Klaviyo reports per-flow revenue and revenue per recipient. Constant Contact reports opens and clicks.
/ What breaks in bad migrations
Where DIY Constant Contact migrations go wrong.
These are the things most brands lose when they migrate without a structured process. Each one is fixable, but only if you know to fix it before cutover, not after.
- Constant Contact autoresponders rebuilt as Klaviyo flows
- Templates rebuilt in Klaviyo (Constant Contact designs as reference)
- List structures translated to Klaviyo lists + segments
- Forms updated from Constant Contact embeds to Klaviyo
- Authentication (DKIM/SPF/DMARC) reconfigured for Klaviyo
How to migrate from Constant Contact to Klaviyo, in 5 steps.
Same process every time. Same outcome every time. Done-for-you, fixed timeline, full transparency.
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01 PHASE Constant Contact audit
Full audit of current account, autoresponders, contacts, sending volume, deliverability state.
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02 PHASE Klaviyo setup
New Klaviyo account, ecommerce integration, authentication, list architecture.
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03 PHASE Flow rebuild
Klaviyo flows built fresh: welcome, abandoned cart, post-purchase, and any other priority automations.
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04 PHASE Contact migration
Subscribers imported with consent and recent engagement data preserved.
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05 PHASE Cutover + monitoring
Constant Contact paused, Klaviyo activated, deliverability monitored.
Constant Contact to Klaviyo migration FAQ
Q.01 How long does a Constant Contact to Klaviyo migration take? +
/ Answer
Two to three weeks for most accounts. The data move is manual but quick; most of the time goes into rebuilding autoresponders as Klaviyo flows, rebuilding templates and forms, and testing before cutover.
Q.02 Does Klaviyo have a Constant Contact integration? +
/ Answer
Not for new accounts. Klaviyo's migration guide says it has no pre-built Constant Contact integration, so contacts, unsubscribes and Constant Contact's engagement segments are exported and imported into Klaviyo. If you send SMS, Constant Contact's local numbers can't be ported, so you need a new sending number in Klaviyo.
Q.03 What does a Constant Contact to Klaviyo migration cost? +
/ Answer
It runs as a fixed-scope Project Engagement with a single fee, typically $3-15K depending on scope. The free migration audit puts the exact scope and price in writing within 24 hours.
Q.04 I use Constant Contact for events too, can I keep that? +
/ Answer
Constant Contact's event marketing tools are not in Klaviyo. If events are core to your strategy, you may keep Constant Contact for events alongside Klaviyo for ecommerce email.
Q.05 Will my Constant Contact list segments transfer? +
/ Answer
Functionally yes. Lists become Klaviyo lists, contact properties become Klaviyo profile properties, segment logic is rebuilt with Klaviyo's more powerful segmentation engine.
Q.06 What happens to my Constant Contact templates? +
/ Answer
Rebuilt in Klaviyo using your Constant Contact designs as reference. Most brands take the opportunity to update templates for mobile-first design at the same time.
/ Related guides
GUIDE
Klaviyo vs Constant Contact
Which one fits your store
GUIDE
Constant Contact Pricing
Plans, tiers and SMS
/ Migrating from a different platform?
Ready to migrate from Constant Contact?
Free migration audit, no commitment. Account audit, flow inventory, subscriber review, timeline. Written plan within 24 hours.
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Get your free migration audit
Drop your store URL and email. We'll review your email program and send a written 90-day revenue roadmap within 24 hours. No obligation.