Mailchimp grabs basic data, like if someone has purchased something, but not all of it. You’re missing out on which products they bought, which other products they viewed, and more. Adding in anything else requires manual uploads and spreadsheet management, and you're strictly limited in the number of data points you can import.

Klaviyo goes deep to capture all of your data, so you can be a better marketer. Segment and personalize based on which products they viewed, what they’ve bought in the past, when they last purchased, or other information. This is available for your customer's entire history with your store. It's all within Klaviyo with no limits on data size or volume.

Mailchimp's limited data syncs mean that your targeting options are restricted.

Klaviyo puts all the data you need at your fingertips, including product tracking, coupon use, lifetime and per-order revenue per customer, and more.

With Mailchimp, you have to re-load a static list every time you need to update a Facebook Custom Audience.

Klaviyo integrates with Facebook Custom Audiences in seconds, and keeps them up to date. Use our Facebook Lead Ads integration to grow your audience, and target them using a combination of email and Facebook Custom Audiences to keep the momentum rolling. Rock on.

Mailchimp offers email and chat support, but free accounts are on their own. Happy reading!

We got you. Klaviyo assigns a dedicated account manager for larger customers, and offers email support to everyone. Live Chat is available too!

Mailchimp lets you segment your email marketing -- to a point. You can launch an automated flow to people who have never bought - but if you want to segment based on people who haven't bought in the last 90 days, you're out of luck.

Klaviyo lets you be very targeted in your segmentation. Whether it's a campaign or a flow, you can tailor your audience based on when they purchased, what they bought, how much they spent in a specific time frame, and more. Try splitting your abandoned cart flow by the value of the cart.

MailChimp can gather email addresses from other applications, but doesn't get other usage or interaction data from those systems

Klaviyo integrates with your business applications to pull in rich interaction data for all your customers. Segment and personalize your automated flow messages based on exactly how people are interacting with your loyalty program, reviews, or other facets of your business. Try encouraging new product reviews by offering a coupon after their first review on your store.

If you can't test, you can't optimize. And with Mailchimp, you can't test automated emails or automated email series.

Klaviyo includes AB testing for every paying customer. And that includes the ability to test automated emails and flows.