Best for
Best for marketing teams and agencies that want a polished drag-and-drop builder, prebuilt journeys and a large integration catalogue.
- Freelancers
- Small and mid-sized
- Enterprise
Email Marketing Comparison
Campaign Monitor vs. Klaviyo
At a glance
At a glance
Best for
Best for ecommerce and B2C teams that want email and SMS driven by a customer data platform with real-time segmentation and deep store data.
- Freelancers
- Small and mid-sized
- Enterprise
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | Campaign Monitor | Klaviyo |
|---|---|---|
| Starting price | Not stated | Free plan for up to 250 active profiles and 500 email sends a month The free plan also carries $5 of mobile messages and $5 of Composer usage a month, with email support for the first 60 days. Paid plans scale with the number of active profiles and the message volume on top. |
| Free trial | Free plan for up to 500 contacts on a 30-day trial, with a 500 email send limit | Free plan for up to 250 active profiles and 500 email sends per month, plus $5 of mobile messages a month |
| API | Yes, API access with 250+ integrations | Yes, a REST API with webhooks, SDKs, warehouse syncs and more than 350 integrations |
| Hosting | Cloud (SaaS) | Cloud (SaaS) |
| Made in | Not stated | United States |
| Campaign types | Yes, email campaigns and newsletters, with a website builder available as a paid add-on | Yes, email campaigns with SMS and push from the same customer profiles |
| Automation and journeys | Yes, prebuilt customer journeys and drip campaigns, with unlimited automated emails on Essentials and above | Yes, automation flows triggered by customer behaviour and events |
| Segmentation and personalisation | Yes, segmentation, with advanced engagement segments on the Premier plan | Yes, real-time segmentation with predictive analytics on unified customer profiles |
| Templates and editor | Yes, a drag-and-drop builder with 100+ responsive templates and support for custom-coded templates | Yes, a drag-and-drop email editor with templates |
| Deliverability and testing | Yes, A/B testing, link review, and design and spam testing | Yes, deliverability tools with reporting and revenue attribution |
| Ecommerce and CRM data | Yes, CRM and ecommerce connections among the 250+ integrations | Yes, a customer data platform with deep ecommerce data and more than 350 integrations including Shopify and WooCommerce |
| Integrations and API | Yes, API access with 250+ integrations | Yes, a REST API with webhooks, SDKs and warehouse syncs |
| AI features | Yes | Yes |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Email helpdesk, Phone | more entries Email helpdesk, Chat, Community forum |
| Onboarding | Not stated | Documentation and knowledge base, Live online demos and webinars, Personal consulting |
| Company size | Freelancers, Small and mid-sized, Enterprise | Freelancers, Small and mid-sized, Enterprise |
| Integrations | Not stated | Shopify, Magento 1.x, Magento 2.x, BigCommerce, WooCommerce, Wix, OpenCart, PrestaShop, Spree, Shift4Shop, Volusion |
Add a tool
Adds a column to the table, from the tools in this category.
Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Key Differences
- Free trial Campaign Monitor Free plan for up to 500 contacts on a 30-day trial, with a 500 email send limit Klaviyo Free plan for up to 250 active profiles and 500 email sends per month, plus $5 of mobile messages a month
- Support Campaign Monitor Email helpdesk, Phone Klaviyo Email helpdesk, Chat, Community forum
- API Campaign Monitor Yes, API access with 250+ integrations Klaviyo Yes, a REST API with webhooks, SDKs, warehouse syncs and more than 350 integrations
- Campaign types Campaign Monitor Yes, email campaigns and newsletters, with a website builder available as a paid add-on Klaviyo Yes, email campaigns with SMS and push from the same customer profiles
- Automation and journeys Campaign Monitor Yes, prebuilt customer journeys and drip campaigns, with unlimited automated emails on Essentials and above Klaviyo Yes, automation flows triggered by customer behaviour and events
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
Campaign Monitor
Strengths
- Drag-and-drop builder with 100+ responsive templates and custom-coded templates
- Prebuilt customer journeys and drip campaigns
- AI Writer, AI Email Booster and AI Segment Mapper
- 250+ integrations, including CRM and ecommerce, with an API
Limitations
- Advanced engagement segments are reserved for the Premier plan
- The website builder is a paid add-on
Klaviyo
Strengths
- Customer data platform with unified profiles behind email, SMS and push
- Real-time segmentation with predictive analytics
- More than 350 integrations including Shopify and WooCommerce
- Free plan for up to 250 active profiles
Limitations
- Pricing scales with the number of active profiles
- The free plan is limited to 500 email sends a month
Plans
Pricing
Campaign Monitor
- Free $0 / month Up to 500 contacts on a 30-day trial, with a 500 email send limit; no credit card required.
- Lite Not stated Core email tools with up to 2,500 monthly sends.
- Essentials Not stated Unlimited monthly sends and priority support.
- Premier Not stated Unlimited monthly sends, advanced engagement segments and phone support.
- Enterprise Not stated Custom pricing on annual contracts with a dedicated account manager.
Klaviyo
- Free $0 / month Up to 250 active profiles, 500 email sends a month and $5 of mobile messages a month, with email support for the first 60 days.
- Email Not stated Paid email plan that scales with the number of active profiles, with higher sending allowances.
- Email and SMS Not stated Adds SMS and mobile messaging on top of the email plan, priced by active profiles and message volume.
What users say
Review Scores · opens after launch
Campaign Monitor
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Klaviyo
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
Campaign Monitor https://www.campaignmonitor.com · checked against the official source on 2026-08-21
Klaviyo https://www.klaviyo.com · checked against the official source on 2026-09-17
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.