Overview

Mailjet was founded in 2010, headquartered in Paris, France, now part of the Sinchn/Pathwire group. It is a French email API and marketing platform that provides both transactional and marketing email capabilities through a unified API and SMTP interface.

As of 2026, Mailjet serves over 55,000 customers, processing billions of emails monthly. As a French company, Mailjet is inherently GDPR compliant, making it a preferred choice for businesses operating email campaigns in Europe.

Key Strengths

  • Transactional + Marketing Unified: One platform handles transactional emails (verification codes, order notifications) and marketing emails (newsletters, promotions) — no need to maintain two separate sending systems. See Email Marketing Platform Guide.
  • Real-Time Collaborative Analytics: Dashboard supports multi-user simultaneous viewing of email metrics (open rates, click-through rates, bounce rates, complaint rates) with custom alerts.
  • Generous Free Tier: 6,000 free emails per month — ideal for startups and individual projects. Reference Triggered Email Strategies.
  • GDPR Compliance: As a French company, Mailjet's data processing and storage strictly follow GDPR requirements. Data resides in EU servers — critical for European data compliance needs.

Product Ecosystem

Email API & SMTP

Mailjet provides both RESTful API and SMTP relay for email sending, supporting unified management of transactional and marketing emails. SDKs available in Python, Ruby, PHP, Node.js, Java, Go, and more for quick developer integration.

Drag-and-Drop Email Editor

Built-in drag-and-drop editor with responsive template library enables non-technical users to create professional emails. Custom HTML template imports and template saving are supported.

Analytics & Reporting

Real-time email analytics: volume, open rates, click-through rates, bounce rates, complaint rates, unsubscribe rates. Filterable by time range, email type, and sending domain. CSV/PDF export supported.

Limitations

  • Average Deliverability: For mission-critical transactional email delivery, Postmark offers superior performance.
  • Advanced Features Require Payment: SMTP relay, custom sending IPs, and higher API rate limits are only available on paid plans.
  • Low Brand Awareness Outside Europe: Limited recognition in Asia-Pacific and North American markets, fewer localized resources and community support.

Use Cases

  • Transactional + Marketing Email Needs (★★★★★): Single platform for both email types with unified API management.
  • European Business (★★★★): GDPR compliant with EU data storage — a top choice for Europe-focused operations.
  • High-Deliverability Transactional (★★★): Choose Postmark or SendGrid instead.
  • Asia-Pacific/North America Markets (★★★): Localized support is limited — consider regional providers.

Pricing

Plan Monthly Price Emails/Month Key Features
Free $0 6,000 Basic API + email editor + analytics
Essential $15 30,000 SMTP relay + priority support
Premium $25 60,000 Advanced API + sub-accounts + multi-user
Custom Custom Custom Dedicated IP + SLA + dedicated support

Note: Free plan caps at 6,000 emails/month. Overages billed per email.

FAQ

  • Mailjet vs SendGrid? Choose Mailjet for European operations (GDPR compliance); choose SendGrid for global reach with more nodes and integrations. See Email Service Comparison.

  • Is Mailjet's free tier sufficient? 6,000 emails/month is suitable for personal projects and small team trials. Upgrade when volume grows. See Email Service Provider Comparison for plan selection.

  • Does Mailjet support custom domains? Yes, DKIM, SPF, and DMARC configuration is required. The SMTP Configuration Guide can help with setup.

  • Where is Mailjet data stored? Data is stored on servers within the EU, fully compliant with GDPR requirements. See GDPR Compliance Checklist.