Klaviyo vs Mailjet
Klaviyo vs Mailjet, compared side by side on 18 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Klaviyo is on 69/100 and Mailjet on 54/100.
Where each one leads
Klaviyo
- our overall score: 69/100 against 54/100
- agent readiness: 52/100 against 39/100
- headcount: 2,866 against 48
- funding raised: $373M against $16.7M
- LinkedIn following: 145,500 against 7,345
Mailjet
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Klaviyo | Mailjet |
|---|---|---|
| What it is | Klaviyo is the only CRM built for B2C brands, powered by a built-in data platform and AI insights to unify marketing automation, analytics, and customer service for personalized experiences and accelerated growth. | All-in-one email platform for designing, sending, and tracking marketing and transactional emails. |
| Category | Marketing Automation, E-commerce, SaaS, Customer Data Platform | Email Marketing, Email API, Marketing Software, SaaS |
| Sells toBusiness model | B2C | B2B |
| Offering | Not published | Software |
| Founded | 2012 | 2010 |
| Headquarters | Not published | Paris, France |
| Status | Active | Active |
Size, funding and growth
| Measure | Klaviyo | Mailjet |
|---|---|---|
| Employees | 2,866 | 48 |
| Total funding | $373M | $16.7M |
| Latest round | Not published | Series B |
| LinkedIn followers | 145,500 | 7,345 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Klaviyo | Mailjet |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 69/100 | 54/100 |
| Traction | 60/100 | 53/100 |
| Team | 30/100 | 70/100 |
| Community | Not published | 8/100 |
| Search visibility | 35/100 | 32/100 |
| Quality | 86/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (52/100) | F (39/100) |
| Domain ratingLink authority, 0-100 | 91/100 | 85/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Klaviyo | Mailjet |
|---|---|---|
| Hosting | Netlify | Not detected |
| CDN | Cloudflare | Cloudflare |
| CMS | Ghost | WordPress |
| Frameworks | Astro | Jquery, Tailwind CSS, Bootstrap |
| Analytics | Google Tag Manager | Not detected |
| Support stack | HubSpot | Not detected |
Product and pricing
| Measure | Klaviyo | Mailjet |
|---|---|---|
| Key features | B2C CRM, Omnichannel Marketing, Klaviyo AI, Built-in Data Platform, Extensive Integrations, Customer Hub | Not published |
Klaviyo vs Mailjet: common questions
Which is better, Klaviyo or Mailjet?
On our 0-100 score Klaviyo rates higher (69/100 against 54/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 18 data points above: read the rows that match what you are buying for.
How do Klaviyo and Mailjet compare on the numbers?
Klaviyo leads on our overall score (69/100 against 54/100), agent readiness (52/100 against 39/100), headcount (2,866 against 48), funding raised ($373M against $16.7M), LinkedIn following (145,500 against 7,345).
Read the full Klaviyo review and pricing or the Mailjet review and pricing. You can also browse other Klaviyo alternatives we track.