Quick Verdict
Choose Klaviyo if you run an established online store with a sizable catalog and want product-level flows, purchase-based segmentation and detailed revenue attribution tied to your store data.
Choose AWeber if you're a small shop, creator or service business that sells a handful of products, wants a bigger free plan, simple automation and 24/7 support, or sells directly from landing pages.
If your business lives on a store platform with many products, Klaviyo's depth is worth it. If you sell a few products, digital goods or services, AWeber is simpler, includes more on its free plan and offers round-the-clock help.
The Core Difference
Klaviyo is store-first. It connects deeply with platforms such as Shopify, WooCommerce, BigCommerce and others, pulling in product and order data so you can build flows around what people browse and buy.
AWeber is email-first. It offers ecommerce tools such as abandoned cart emails, Stripe-powered sales pages and store integrations, but its core is forms, landing pages, sequences and newsletters, with simplicity and support as priorities.
AWeber vs Klaviyo at a Glance
| Feature | AWeber | Klaviyo |
|---|---|---|
| Free plan | 500 subscribers, 3,000 sends/month, 1 automation | 250 active profiles, 500 emails/month |
| Paid entry | Lite from $15/month ($12.50 annual) | From $20/month for 500 profiles and 5,000 emails |
| Pricing basis | Subscribers | Active profiles |
| Store integrations | Shopify and others listed among 750+ integrations | Deep integrations with Shopify, WooCommerce, BigCommerce and more |
| Sell without a store | Stripe-powered sales pages | Designed around a store platform |
| Abandoned cart | Yes | Yes, with product-level flows |
| Support | 24/7; priority including phone on Plus | Varies by plan |
Free Plans Compared
AWeber's free plan covers 500 subscribers and 3,000 sends a month, including one automation. Klaviyo's free plan covers 250 active profiles and 500 emails a month.
For a new shop building its first list, AWeber's free plan holds twice the contacts and six times the monthly email volume. Klaviyo's free plan is mainly a way to try its tools before committing. See AWeber free plan.
Pricing as Your Store Grows
Klaviyo's paid email plans start at $20 a month for 500 active profiles and 5,000 emails, with tiers rising as your active profiles grow. AWeber Lite starts at $15 a month and Plus at $30 a month for 500 subscribers, or $12.50 and $20 a month billed annually.
As a rule, store-first platforms charge for their data depth. If you'll use product recommendations and detailed attribution, that cost can pay for itself. If you'll mostly send newsletters and a few automations, you may pay for features you don't use. See AWeber pricing.
Ecommerce Flows and Data
Klaviyo's strength is using store data in your emails: abandoned cart and browse flows that show the exact products someone viewed, post-purchase sequences tailored to what they bought, and segments built from order history.
AWeber covers the core ecommerce emails a small store needs: welcome series, abandoned cart reminders, order follow-ups and win-back campaigns. Purchase tags let you segment buyers, and Plus adds sales tracking. For a small product range, that's usually enough. See AWeber ecommerce.
Selling Without a Store
If you don't have a store platform at all, AWeber has an advantage. Its sales pages use a Stripe-powered ecommerce element to sell digital products, services, memberships and event access, with one-time, subscription and split payments.
Buyers are added to your list automatically, ready for follow-up. That makes AWeber a complete starting setup for creators and service businesses. See AWeber sales pages.
Ease of Use and Support
AWeber is generally simpler to learn, with AI tools for writing and design and a focused interface. Klaviyo is approachable for store owners but rewards time spent learning its data-driven features.
AWeber's 24/7 support from Lite, with priority support including phone on Plus, is a strong reason to choose it if you expect to need help. See AWeber customer support.
Which Should You Choose?
You run a store platform with many products, want product-level personalization and need revenue attribution across many flows.
You sell a few products, digital goods or services, want a bigger free plan and value simplicity and 24/7 support.
You start small on AWeber and grow into a large catalog. Migrating then is straightforward with exported data.
Use AWeber's free plan with abandoned cart emails, sales pages and a welcome automation.
AWeber vs Klaviyo FAQs
Is Klaviyo better than AWeber for ecommerce?
For catalog-driven stores, Klaviyo's store data features go further. For small shops and creators, AWeber is simpler, has a bigger free plan and offers 24/7 support.
Does AWeber work with Shopify?
Shopify is among AWeber's listed integrations, so store customers can flow into AWeber for follow-up emails.
Which free plan is bigger?
AWeber's free plan covers 500 subscribers and 3,000 sends a month; Klaviyo's covers 250 active profiles and 500 emails.
Can I sell without a store using AWeber?
Yes. AWeber's sales pages use Stripe to sell digital products, services and memberships.