Migrate from Mailchimp (or Klaviyo/Omnisend) without losing data or momentum
Use case: Switch email platforms without the usual migration pain
Most companies that switch from Mailchimp, Klaviyo, or Omnisend to a more powerful platform lose 15-30% of their list to bad data, broken automations, and deliverability drops during the transition. Webanto makes migration safe and fast: we import your contacts, tags, segments, and engagement history with full suppression and consent data intact, rebuild your key automations in our more durable workflow engine, run the two platforms in parallel for 2-4 weeks with identical sends, and give you a clear 'cutover day' checklist so nothing falls through the cracks.
What to expect
Higher deliverability and engagement after migration because our engine has better reputation management and retry logic.
No loss of historical engagement data or suppression lists — your deliverability starts where you left off.
Less migration stress — the parallel run period means you can verify everything works before you cancel the old platform.
Lower long-term cost and more capability (social, content intelligence, store sync) without the list-size pricing punishment.
How to set this up
- 1
Export your full contact list, tags, segments, and suppression history from Mailchimp/Klaviyo/Omnisend (we provide exact templates).
- 2
Import into Webanto — we automatically map tags, custom fields, engagement scores, and consent status.
- 3
Rebuild your top 5-10 automations in Webanto's workflow engine (we provide side-by-side migration support).
- 4
Run the two platforms in parallel for 2-4 weeks, sending identical campaigns to the same segments and comparing results.
- 5
On cutover day, pause the old platform, switch DNS and tracking, and monitor deliverability closely for the first 7-14 days.
- 6
After 30 days, export the final engagement and suppression data from the old platform and archive it.
Products that power this use case
Frequently asked questions
Will I lose my Mailchimp/Klaviyo deliverability reputation when I switch?
No — if you migrate cleanly with full suppression history and warm up the new sending domain properly. We provide a detailed migration playbook and can run the platforms in parallel so your reputation transfers smoothly.
How long does a typical migration take?
2-6 weeks depending on the complexity of your automations and how many lists/segments you have. The actual data import is usually done in 48 hours; the parallel testing and cutover planning is what takes the time.
Can I keep using my existing Mailchimp/Klaviyo templates?
We can import HTML templates directly. Most teams rebuild their key flows in Webanto's visual builder because it's more powerful, but you can keep using your existing creative if you prefer.
What happens to my existing automations and journeys during migration?
We rebuild them in Webanto (usually 1:1 or better because our engine is more durable). You run both platforms in parallel so nothing is lost. On cutover day you pause the old ones and the new ones take over seamlessly.
Which automations are most important to rebuild before cutting over from Mailchimp?
In order of revenue impact: abandoned cart recovery (if you run ecommerce), welcome sequence for new subscribers, and win-back for lapsed contacts. These three automations typically account for the majority of revenue from email automation. Everything else can be rebuilt in the weeks after cutover without material business impact.
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