Campaign Monitor vs Klaviyo: newsletters or ecommerce flows?
By Jean Luc Poitier, SEO and growth marketing strategist · Campaign Monitor Reviews · Updated October 4, 2026
Campaign Monitor fits newsletters, nonprofits, B2B senders, and agencies. Essentials has no monthly send cap, every paid plan includes client sub-accounts and private labeling, and Premier adds phone support. Klaviyo's plan includes sends up to 10 times your profiles, and it publishes no white label or phone support.
Pick Klaviyo if you run an online store, especially on Shopify. Reviewers praise its store integration, abandoned-cart flows, and segments built on purchase history. It also costs less than Essentials at each list size we checked and has a free plan for 250 active profiles.
Campaign Monitor vs Klaviyo at a glance
| Compared on | Campaign Monitor | Klaviyo |
|---|---|---|
| Comparable plan | Essentials (unlimited sends) | Email plan, its one paid email plan (sends up to 10x profiles) |
| Price at 500 contacts | $31/mo | $20/mo, 5,000 sends ($19 off the first month) |
| Price at 2,500 contacts | $74/mo | $60/mo, 25,000 sends |
| Price at 10,000 contacts | $182/mo | $150/mo, 100,000 sends |
| Lowest paid price at 500 contacts | Lite: $13/mo, 2,500 emails/mo | $20/mo (Email plan) |
| Annual billing | 10% off | Not published |
| Free plan | No | Yes: 250 active profiles, 500 sends/mo, Klaviyo logo |
| Free trial | 30 days, 500 contacts and 500 emails, no card | None (free plan instead) |
| Phone support | Premier plan | None published; chat support |
| Agency sub-accounts / white label | Sub-accounts and private labeling on every paid plan | One login across client accounts plus a partner program; no white label published |
| Trustpilot, organic reviews only | 1.44 (n=18) | 1.18 (n=49) |
| G2 rating (reviews) | 4.1 (731) | 4.6 (1,356) |
Figures checked against each company's published pages and review-platform listings as of 2026-10-04. “Not published” means the company does not publish that figure.
Prices are monthly billing at the stated list size; Klaviyo counts active profiles. Trustpilot row: organic reviews only (written without an invitation or link from the company), from our pull on October 4, 2026. Campaign Monitor's 18 span January 2023 to September 2026; Klaviyo's 49 span November 2025 to September 2026. The windows differ and Campaign Monitor's sample is small. G2 figures are each product's overall rating and review count on G2.
What each one is built for: newsletters and clients, or an online store
Campaign Monitor is a general email platform. Reviewers use it for newsletters, member updates, and client work at agencies, and they praise the drag-and-drop builder, clean templates, and per-campaign reports. It also sends transactional email from the same account, and Campaign Monitor reports an average 99% delivery rate.
Klaviyo is built around store data. Its paid plan adds predictive analytics and generative AI for segments, content, flows, and images. About a quarter of the 50 G2 reviews in our pull mention Shopify by name.
“I like that Klaviyo is built for e-commerce and integrates really well with Shopify.”Marc D., G2, May 2026
That focus cuts the other way for businesses that don't sell online. A few lead-generation and B2B reviewers in our pull say the setup and the metrics assume a store.
“As a non-direct-to-consumer website, it would be helpful if Klaviyo were better tailored to that model so we don’t have to see metrics like 0 sales, 0 transactions, and similar data that isn’t relevant for us.”B D., G2, Apr 2026
Campaign Monitor vs Klaviyo pricing: per-profile price against the send cap
Klaviyo has one paid email plan. It costs $20 a month at 500 active profiles, $60 at 2,500, and $150 at 10,000, and each tier includes sends up to 10 times your profiles. Unsubscribed and suppressed contacts don't count toward the bill. SMS is billed separately.
Campaign Monitor Essentials costs $31, $74, and $182 at the same sizes, with no monthly send cap. If you email each contact fewer than 10 times a month, Klaviyo costs less. If you publish a daily or several-times-a-week newsletter to a large list, the uncapped plan is worth pricing out. For a small list with modest sending, Campaign Monitor Lite starts at $13 a month for 500 contacts and 2,500 emails. On either product, the price grows with your list.
Agencies and support: Campaign Monitor has both on the price list
Campaign Monitor puts client sub-accounts and private labeling on Lite, Essentials, and Premier, so an agency can run every client under one login with its own branding and add a markup to each client's bill. Klaviyo lets an agency user switch between client accounts that invite them and runs a partner program for referrals. It publishes no sub-account billing or white label.
Campaign Monitor holds G2's Best Support badge for small business (Fall 2026, see awards) and offers phone support on Premier. Klaviyo lists chat with its support team, a community, an academy, and a growth success team. It publishes no phone support.
Try Campaign Monitor free30-day trial with 500 contacts and 500 emails, no card at signup. Details: Campaign Monitor free trial and pricing.
Where Klaviyo wins
- Built for ecommerce: reviewers single out its Shopify integration, abandoned-cart flows, and segments based on purchase history.
- Predictive analytics and generative AI for segments, content, flows, and images on the paid plan.
- A lower price at each list size we checked: $20, $60, and $150 a month at 500, 2,500, and 10,000 active profiles.
- A free plan for up to 250 active profiles and 500 sends a month.
- You pay for active profiles only; unsubscribed and suppressed contacts don't count.
- A higher G2 rating: 4.6 from 1,356 reviews, against Campaign Monitor's 4.1 from 731.
Not settled yet? See Klaviyo alternatives or Campaign Monitor vs Mailchimp.
Campaign Monitor vs Klaviyo FAQ
Is Klaviyo cheaper than Campaign Monitor?+
Per contact, yes. Klaviyo's Email plan costs $20 a month at 500 active profiles, $60 at 2,500, and $150 at 10,000, with sends up to 10 times your profiles. Campaign Monitor Essentials costs $31, $74, and $182 with no monthly send cap, and Campaign Monitor Lite starts lower, at $13 for 500 contacts. Prices checked October 4, 2026.
Is Klaviyo or Campaign Monitor better for a Shopify store?+
Klaviyo. It is built for ecommerce, and reviewers in our pull single out its Shopify integration, abandoned-cart flows, and segments based on purchase history. Campaign Monitor is the stronger fit for newsletters, nonprofits, B2B senders, and agencies.
Which is better for newsletters and businesses that don't sell online?+
Campaign Monitor. Essentials and Premier have no monthly send cap, the builder is easy for non-designers, and its reports center on opens, clicks, and readers. Klaviyo's reporting is built around store revenue, which some non-ecommerce users say they don't need.
Which is better for agencies, Campaign Monitor or Klaviyo?+
Campaign Monitor includes client sub-accounts and private labeling on every paid plan. Klaviyo lets one agency login switch between client accounts and runs a partner program, but it publishes no sub-account billing or white label.
How do Campaign Monitor and Klaviyo reviews compare?+
Klaviyo rates higher on G2: 4.6 from 1,356 reviews against Campaign Monitor's 4.1 from 731. Among organic Trustpilot reviews (written without an invitation), Campaign Monitor averages 1.44 across 18 and Klaviyo 1.18 across 49, pulled October 4, 2026.