Migrate from Mailchimp to Klaviyo: E-commerce List Move Guide (2026)
How to Migrate from Mailchimp to Klaviyo (Step-by-Step) Migrating your email marketing data from Mailchimp to Klaviyo can be a complex process, but with the right approach, you can ensure a safe and successful transfer of your valuable customer information. In this guide, we will walk you through the steps to migrate your data, including purchase history and segments, which are crucial for personalized marketing campaigns. Pre-Migration Checklist Backup Mailchimp data (Export as CSV/JSON): This step is crucial to prevent data loss in case something goes wrong during the migration process. You can export your data from Mailchimp by going to Settings > Data Management > Export. Choose the format that suits your needs, either CSV or JSON. Create Klaviyo account (Trial/Paid): Before starting the migration, make sure you have a Klaviyo account. You can sign up for a trial or paid plan, depending on your business needs. Map your fields (e.g., “Deal Name” in Mailchimp = “Opportunity” in Klaviyo): Field mapping is essential to ensure that your data is transferred correctly. Take the time to review both Mailchimp and Klaviyo’s field structures and map them accordingly. For example, Mailchimp’s “Deal Name” field might correspond to Klaviyo’s “Opportunity” field. Inform your team of downtime: It’s essential to notify your team about the potential downtime during the migration process to avoid any disruptions to your marketing activities. Method 1: The “One-Click” Importer (If available) Klaviyo occasionally offers a native import tool for Mailchimp users. To check if this feature is available, follow these steps: ...