Mailjet

Overview

Mailjet was founded in 2010 and is headquartered in Paris, France, serving 55K+ users as an email API and marketing platform. Mailjet unifies email marketing and transactional email on one platform — marketing teams create email with a collaborative editor while developers send system email via REST API and SMTP relay, sharing delivery infrastructure and statistics.

Mailjet's signature feature is the Passport collaborative email editor, which lets team members edit templates in real time, similar to Google Docs multi-user editing, significantly boosting team output. As a French company, Mailjet is fully GDPR compliant with data centers in Europe, making it especially suitable for European-market businesses with strict compliance needs. The platform also offers marketing automation, segmentation, and real-time statistics, making it a professional choice that serves both marketing and developer scenarios.

Key Strengths

• Unified marketing and transactional email: Manage both marketing and transactional email on one platform, sharing sending reputation and sending domains to avoid maintaining 2 systems and reduce operational cost.
• Collaborative email editor: The Passport editor supports real-time multi-user editing, letting teams edit templates and content together, cutting back-and-forth by 50% and improving template output.
• REST API and SMTP relay: A full-featured email sending API and highly available SMTP relay support 3 capabilities (template API, send statistics, error diagnostics) for developer integration.
• GDPR compliance and European data centers: Fully GDPR compliant with data stored in Europe, suited to EU-market businesses and industries with strict data sovereignty requirements across 30+ countries.
• Accessible free plan: 6,000 emails/month on the free plan suit small teams and developers validating email sending quickly.

Product Ecosystem

Passport Collaborative Editor

Mailjet's drag-and-drop email editor supports real-time multi-user collaboration, letting team members edit templates, blocks, and content together with a document-collaboration experience. Built-in templates and modular components, plus brand palettes, produce on-brand email quickly.

Email Marketing and Automation

Marketing automation workflows support behavior-triggered sequences (open, click, subscribe), A/B testing, and audience segmentation. Combined with the email automation marketing workflow guide, teams can build welcome-to-conversion automated funnels.

Transactional Email API and SMTP

Developers get a REST API and SMTP relay supporting template rendering, batch sending, send statistics, and bounce handling, with SPF/DKIM/DMARC configuration to protect deliverability. Technical teams can refer to the API integration basics guide.

Statistics and Delivery Analysis

Real-time statistics cover delivery, open, click, unsubscribe, and complaint metrics, with analysis by sending domain and recipient to identify delivery issues and continuously improve sending reputation.

Limitations

• Weaker North American coverage: Mailjet's market focus is Europe, with fewer North American users and ecosystem; English-market localization trails competitors such as SendGrid.
• Limited advanced automation: Compared with ActiveCampaign's behavior scoring, conditional content, and CRM integration, Mailjet's automation is more email-trigger oriented.
• Free plan limits: The free plan includes Mailjet branding and daily send limits; white-labeling and large-scale sending require paid plans.
• Limited template library: Fewer and less polished templates than Mailchimp; highly customized brand templates must be designed in-house.

Use Cases

• Unified marketing and transactional email (★★★★★): Development-driven teams sending both marketing and system email can manage everything on one platform; see the email service setup guide.
• European-market business (★★★★★): GDPR compliance and European data centers suit EU users and industries with strict data sovereignty requirements.
• Collaborative email creation teams (★★★★): The Passport editor suits marketing teams that build email templates together.
• Budget-constrained small teams (★★★★): The free plan's 6,000 emails/month suit validation; evaluate paid tiers as volume grows.

Pricing

Note: Pricing shown as of August 2026 and scales with send volume and users. The free plan suits validation; paid plans add white-labeling and higher volume. See the Mailjet website for the latest rates.

FAQ

• Mailjet or SendGrid? Both are email API providers. Mailjet leads in unified marketing/transactional email, collaborative editing, and European compliance; SendGrid is more mature in the North American ecosystem, developer docs, and advanced APIs. Choose Mailjet for Europe and collaboration, SendGrid for North America and developer-first needs.
• Does Mailjet support transactional email? Yes. REST API and SMTP relay support password resets and order confirmations, sharing sending infrastructure with marketing email; see the transactional email API guide.
• How can I improve Mailjet deliverability? Configure a custom sending domain, complete SPF/DKIM/DMARC authentication, and monitor bounces; see the email deliverability optimization guide.
• Is the Mailjet free plan enough? The free plan's 6,000 emails/month suit small-scale validation; white-labeling, higher volume, and advanced automation require paid plans.; see email service provider comparison.
• Does Mailjet support collaborative editing? Yes. The Passport editor lets multiple team members edit the same template in real time, ideal for marketing teams.; see email marketing platform guide.