Best for
Best for creators, designers and small businesses that want beautifully designed emails without a steep learning curve.
- Freelancers
- Small and mid-sized
No tools match
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Email Marketing Comparison
At a glance
Best for
Best for creators, designers and small businesses that want beautifully designed emails without a steep learning curve.
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.
Cataleo does not name a winner. Both statements come from the vendors themselves.
| Criterion | Flodesk | Klaviyo |
|---|---|---|
| Starting price | Free plan; paid from $19 / month Lite billed annually at 1,000 subscribers, or $25 / month billed monthly. Every paid price scales with the active subscriber count, and annual billing includes one month free. Priced in US dollars worldwide. | 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 available, plus free trials on the paid plans | Free plan for up to 250 active profiles and 500 email sends per month, plus $5 of mobile messages a month |
| API | Yes, a developer API with webhooks and a Model Context Protocol server; API keys are available on paid plans but not on free or trial accounts | 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, plus forms, landing pages and, on the top plan, sales pages | Yes, email campaigns with SMS and push from the same customer profiles |
| Automation and journeys | Yes, workflow automations on the paid plans, unlimited on Pro and above | Yes, automation flows triggered by customer behaviour and events |
| Segmentation and personalisation | Yes, audience segmentation | Yes, real-time segmentation with predictive analytics on unified customer profiles |
| Templates and editor | Yes, designer-made templates and a visual editor | Yes, a drag-and-drop email editor with templates |
| Deliverability and testing | Yes, subject line A/B testing that sends two variants to part of the list and the winner to the rest after 24 hours, with side-by-side results, plus AI subject line recommendations, content and sequence testing through split-path workflows, a send time optimizer, resend to unopens and a dedicated IP as a paid add-on | Yes, deliverability tools with reporting and revenue attribution |
| Ecommerce and CRM data | Yes, integrated checkouts, sales pages and subscriptions with payment processing on the Everything plan | Yes, a customer data platform with deep ecommerce data and more than 350 integrations including Shopify and WooCommerce |
| Integrations and API | Yes, a developer API with webhooks plus a Model Context Protocol server, included on every paid plan, alongside native integrations and Zapier and Pabbly Connect | Yes, a REST API with webhooks, SDKs and warehouse syncs |
| AI features | Yes | Yes |
| MCP-ready | stated Yes | No |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Email helpdesk, Community forum | more entries Email helpdesk, Chat, Community forum |
| Onboarding | Documentation and knowledge base, Live online demos and webinars | more entries Documentation and knowledge base, Live online demos and webinars, Personal consulting |
| Company size | Freelancers, Small and mid-sized | more entries Freelancers, Small and mid-sized, Enterprise |
| Integrations | more entries Shopify, Canva, Instagram, Squarespace, Wix, ThriveCart, ManyChat, HoneyBook, Interact, BookFunnel, Zapier, Pabbly Connect | Shopify, Magento 1.x, Magento 2.x, BigCommerce, WooCommerce, Wix, OpenCart, PrestaShop, Spree, Shift4Shop, Volusion |
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
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Flodesk
Strengths
Limitations
Klaviyo
Strengths
Limitations
Plans
Flodesk
Klaviyo
What users say
Flodesk
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
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
Flodesk https://flodesk.com · checked against the official source on 2026-09-05
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.