Mailchimp vs Klaviyo

Email marketing is one of the highest-ROI channels in digital marketing. For every $1 spent, optimized email programs return up to $72 for ecommerce businesses (Klaviyo benchmark data, 2024). But your results depend heavily on which platform you use. The two biggest names are Mailchimp and Klaviyo, and they are built for very different goals.

Quick Summary

• Mailchimp is best for beginners, non-ecommerce businesses, and anyone who needs a cheap or free start
• Klaviyo is built for ecommerce brands that want to use purchase data to send smarter, more targeted emails
• Klaviyo users attribute 20-40% of total revenue to email marketing; the industry average is 15-20%
• Mailchimp starts free; Klaviyo starts at $20/month with no permanent free tier
• The right choice depends on your business type, budget, and how deep you want to go with data

What These Tools Actually Do

Both Mailchimp and Klaviyo are email service providers (ESPs), software that lets you collect email addresses, design emails, send them to groups of subscribers, and track results like open rates and clicks.

They also both support email automation (pre-written email sequences that send themselves based on triggers, like someone abandoning their shopping cart).

The key difference: Klaviyo is built from the ground up for ecommerce (online shops). Mailchimp started as a general-purpose tool for all business types.

The Core Difference: How They Use Your Data

This is the real reason people switch from one to the other.

Mailchimp stores your subscriber list. It knows who is subscribed, when they joined, and whether they open your emails.

Klaviyo goes much further. It connects directly to your online store and stores a complete profile for every customer. It knows:

• What products they browsed but did not buy
• Their full order history
• Their predicted lifetime value (how much they will spend in the future)
• When they are likely to buy again

This lets Klaviyo send emails like: "Hey, you looked at these shoes three times, here is a 10% discount." Mailchimp cannot do this without a Premium plan and custom setup.

Platform Breakdown

Mailchimp

Founded: 2001. One of the oldest and most recognized email tools.

Best for: Bloggers, agencies, nonprofits, local businesses, anyone new to email marketing.

Pricing (2025):

• Free: up to 500 contacts, 1,000 emails/month
• Essentials: from $13/month
• Standard: from $20/month
• Premium: from $350/month (advanced segmentation lives here)

Strengths:

• Easiest drag-and-drop email builder in the industry
• 330+ integrations
• 24/7 support on all paid plans, including phone support on Premium
• Free plan is genuinely useful for getting started

Weaknesses:

• Advanced segmentation (based on behavior or purchase history) is locked behind the $350/month Premium plan
• Not natively built for ecommerce data

Klaviyo

Founded: 2012. Now one of the fastest-growing marketing platforms for ecommerce.

Best for: Shopify, WooCommerce, and BigCommerce stores that want to use customer data to drive more revenue.

Pricing (2025):

• Free: up to 250 contacts (very limited, not meant for long-term use)
• Paid: starts at $20/month, scales based on total active profiles
• Note: you pay for every profile in your account, not just the ones you email

Strengths:

• Deep native ecommerce integrations
• Unlimited behavioral segmentation on all paid plans
• Automated flows (abandoned cart, browse abandonment, win-back, post-purchase)
• 97% inbox delivery rate in independent testing, slightly above Mailchimp's 96%
• Predictive analytics: forecasts when a customer will buy again

Weaknesses:

• Steeper learning curve, most users need 2-4 weeks to get fully set up
• Support is email-only on lower plans (no phone)
• Costs can escalate as your list grows

Feature-by-Feature Comparison

The Numbers: What Real Performance Looks Like

These are the benchmarks Klaviyo published from its platform data in 2024, showing averages across all brands and what the top 10% achieve:

Email Campaigns (one-off sends to a segment):

• Average open rate: 39.74%
• Top 10% open rate: 56.32%
• Average click rate: 1.47%

Automated Flows (triggered sequences):

• Average open rate: 52.04%
• Top 10% open rate: 68.08%
• Average revenue per recipient: $1.94
• Top 10% revenue per recipient: $16.96

Abandoned cart flows specifically:

• Average revenue per recipient: $3.65
• Top 10% revenue per recipient: $28.89
• Average open rate: 50.5%

The lesson here: automated flows dramatically outperform regular campaigns. Flows generate nearly 41% of total email revenue from just 5.3% of total sends (Klaviyo, 2024).

Real Company Examples

The Willow Tree Boutique increased its Klaviyo-attributed revenue by 44.6% year-over-year (2024) by creating segments targeting customers with a predicted lifetime value above $500 or an average order value above $150. Instead of emailing everyone the same thing, they sent personalized messages to their most valuable customers.

Cyber Week 2024 (Klaviyo platform data): Brands using Klaviyo drove over $1.2 billion in sales during the Black Friday/Cyber Monday period. The primary drivers were abandoned cart flows and browse abandonment emails, automations that Mailchimp does not natively support.

How to Choose the Right Platform

Ask yourself these four questions:

1. Do you sell products online?

• Yes: Klaviyo is worth the learning curve
• No: Mailchimp is plenty

2. What is your budget?

• Under $20/month or want free: Mailchimp
• Willing to invest $20+ for data-driven results: Klaviyo

3. How technical are you (or your team)?

• No technical skills, need to launch fast: Mailchimp
• Willing to spend 2-4 weeks learning a more powerful tool: Klaviyo

4. How large is your contact list?

• Under 500 contacts, just starting out: Mailchimp's free plan
• Growing ecommerce list: Klaviyo scales better because its segmentation stays powerful at any list size

Getting Started: Step-by-Step

Starting with Mailchimp

1. Go to mailchimp.com and create a free account
2. Add your first audience (your subscriber list)
3. Connect your website or import a CSV of existing contacts
4. Choose a template and create your first campaign
5. Set up a welcome email automation (Mailchimp calls these "journeys")

Starting with Klaviyo

1. Go to klaviyo.com and create an account
2. Connect your Shopify or WooCommerce store (this is the most important step)
3. Let Klaviyo sync your historical order data (can take a few hours)
4. Set up three core flows first: Welcome Series, Abandoned Cart, and Post-Purchase
5. Create segments once you have data coming in

Key Metrics to Track (On Either Platform)

Once you start sending, monitor these numbers weekly:

• Open rate: The percentage of recipients who opened your email. Industry average is around 39-40% for ecommerce. Below 20% means your subject lines need work.
• Click rate: The percentage who clicked a link inside the email. Average is around 1.5%. Above 3% is strong.
• Unsubscribe rate: Should stay below 0.5% per campaign. Higher means you are sending irrelevant content.
• Revenue per recipient (RPR): Only trackable if your store is connected. This is the ultimate metric for ecommerce, it tells you how much money each email generates on average.

Switching from Mailchimp to Klaviyo (or Vice Versa)

Many businesses start on Mailchimp and switch to Klaviyo once they launch their online store. Here is how to move without losing your list:

1. Export your subscriber list from Mailchimp as a CSV (Audience > Export Audience)
2. Import it into Klaviyo (Lists > Import)
3. Tag imported subscribers as "from Mailchimp" so you can track them separately
4. Set up your flows before your first send
5. Run both platforms in parallel for 30 days to compare results

Brands switching to Klaviyo report a 46% increase in revenue within 2 years on average (Klaviyo internal data, 2024). The caveat: that increase comes from using the platform's automation features, not just from switching.

The One-Line Takeaway

Pick Mailchimp to get started; switch to Klaviyo the day you open an online store.

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