Updated March 2026

AWeber vs Klaviyo

AWeber and Klaviyo serve entirely different use cases. AWeber is a straightforward email platform for small businesses that send campaigns and newsletters. Klaviyo is a sophisticated ecommerce platform for Shopify stores that need revenue attribution, predictive analytics, and purchase-based automation. There is almost no scenario where both tools are genuine contenders for the same business. If you run an online store, Klaviyo is worth its premium. If you send basic business emails, AWeber works but MailerLite offers better value at the same price point.

Our pick: Klaviyo (7.5/10 vs 6.2/10)

Klaviyo wins 3 out of 6 categories. AWeber is better for: non-technical beginners who value phone support and simplicity above all else, and digital product sellers who want built-in payment processing on landing pages.

Try Klaviyo

AWeber

6.2/10

Klaviyo

7.5/10

2/5

Automation

5/5

3/5

Deliverability

4/5

Ease of Use

2/5

3/5

Templates & Design

3/5

2/5

Analytics

5/5

Customer Support

2/5

Pricing Comparison

AWeber

Free Plan

Paid plans from $15/mo

View Pricing

Klaviyo

Free Plan

Paid plans from $20/mo

View Pricing

Pros & Cons

AWeber

Customer support is consistently rated 4.5/5 on Capterra — 24/7 live chat and phone support (8AM-8PM EST). Phone support is rare in this space and genuinely valuable for non-technical users

Smart Designer auto-generates branded email templates from your website URL — enter your domain and it pulls your colours, fonts, and logo. Clever and genuinely time-saving for small businesses

Web push notifications built in — send browser notifications to re-engage visitors. Most email marketing competitors don't offer this at all

December 2024 price hike eliminated ALL grandfathered pricing and hit users with 50-150% increases. Real examples: users paying $29/month saw bills jump to $70+. One user with fewer than 1,000 subscribers went from legacy rate to $55/month overnight

Trustpilot rating of 2.5/5 with 33% one-star reviews — dominated by the price hike backlash and reports of list deletions in January 2025 shortly after the increase

Deliverability is mediocre — EmailToolTester ranked it 11th of 15 platforms at 83.1%. The claim of 'great deliverability' is outdated. MailerLite (94.41%) and ActiveCampaign (94.2%) significantly outperform it

Full AWeber review →

Klaviyo

Best-in-class ecommerce segmentation with nested conditions, real-time updates, and predicted metrics — no other ESP matches this for Shopify stores

Revenue attribution that shows clear ROI per campaign and per automation flow — users cite this as what justifies the premium price

Deepest Shopify integration available with real-time data sync, product feeds, and browse/cart abandonment triggers

Gets expensive fast: $150/mo at 10K contacts, $400/mo at 25K, $720/mo at 50K, $1,380/mo at 100K — significantly more than every competitor

February 2025 billing change: now charges for ALL active profiles including unengaged subscribers, spam signups, and abandoned checkout contacts. Widely viewed as a post-IPO revenue grab

Trustpilot rating of 2.1/5 — the worst of any tool we reviewed. Support is slow, no phone option, and declining post-IPO as they chase enterprise clients

Full Klaviyo review →

The Bottom Line

Choose AWeber if: you want a tool that is best for non-technical beginners who value phone support and simplicity above all else, and digital product sellers who want built-in payment processing on landing pages. It scores highest in ease of use, customer support.

Choose Klaviyo if: you want a tool that is best for shopify stores doing $500k+ in revenue that need serious segmentation and revenue attribution. It scores highest in automation, deliverability, analytics.

Transparency note: We earn affiliate commissions from some tools on this page. This never influences our scores. Our methodology