https://www.mailjet.com/

What is Mailjet?

Mailjet is an email sending platform headquartered in France, providing transactional email, SMTP relay, email marketing campaigns, and API-based email services. Fully GDPR compliant, the service is hosted in data centers located in the European Union, ensuring that user data stays within EU jurisdiction. Mailjet offers a free plan, multiple paid subscription plans, and a custom enterprise class. Though not open source, it holds strong privacy credentials and certifications. The company operates under the broader umbrella of Sinch Email, which includes brands like Mailgun.

Service Details at a Glance

Country of Origin:	France
Data Hosting:	EU-based data centres (Germany and Belgium) exclusively
Privacy & GDPR Compliance:	Yes — AFAQ/AFNOR certified ISO 27001 data stored in EU standard contractual clauses used for any transfers
Free Plan:	Yes — up to 6,000 emails/month, limit of 200/day includes contact storage, basic tools emails include Mailjet branding
Paid Plans:	Essential, Premium, Custom pricing starts at ~17/month for Essential and ~27/month for Premium for 15,000 emails/month enterprise-level features/scaling on Custom plans
Open Source:	No

GDPR and Privacy Foundations

Mailjet has been fully compliant with the EU’s General Data Protection Regulation since its implementation date (May 25, 2018). Mailjet was one of the early adopters to align with GDPR rules. The company holds AFAQ certification via AFNOR, as well as ISO 27001 — both significant markers of strong data privacy and security practices . The stored data centres are located in Germany (Frankfurt) and Belgium (Saint-Ghislain), exclusively within the EU, which further underlines its data residency guarantees for EU customers .

Data Processing and Transfers

According to Mailjet’s privacy policy, data is hosted in the EU. However, when customers are located outside the EU, Mailjet (or Sinch Email) may offer additional hosting options. Transfers of personal data from the EU to other countries are governed via legal mechanisms like standard contractual clauses or Binding Corporate Rules. Also, Mailjet operates under the EU-US Data Privacy Framework (EU-US DPF) for its US-based entity (Mailgun Technologies) to cover such cases of cross-border data transfers .

Plans, Pricing, and Limits

• Free Plan: 0/month. Includes up to 6,000 emails/month (200/day), APIs, SMTP relay, form builder, basic statistics, unlimited contacts. Emails sent include Mailjet branding. No credit card required.
• Essential Plan: Starts at ~17/month for 15,000 emails/month. Removes daily sending limit. Adds features like advanced editor, invoice support, custom branding removal. Pricing increases with volume. Optional yearly billing gives ~10% discount.
• Premium Plan: ~27/month for 15,000 emails/month. Adds segmentation, A/B testing, automations, multi-user access, dynamic content, priority support in higher tiers. More features unlocked as email volume increases.
• Custom / Enterprise Plan: Quote-based. Designed for very high volumes, dedicated account manager, deliverability consulting, dedicated IPs, custom SLAs. Used by large businesses and organizations with specialised needs.

Competitive Edge Versus U.S.-Based Providers

When compared to major American services like SendGrid, Mailchimp (Intuit), Salesforce Pardot, and Adobe Marketo, Mailjet offers a European alternative with stronger guarantees around data sovereignty, GDPR compliance, and EU-based hosting. Many U.S. providers store data first in U.S. or multiple jurisdictions, which can complicate privacy compliance for EU customers. U.S.-based companies are also subject to laws like the CLOUD Act. Mailjet, by contrast, keeps EU customer data inside EU data centers and embeds GDPR-aligned policies deeply into its structure.

Specific Comparisons

1. Data Residency: Mailjet’s EU hosting (Germany, Belgium) vs. many U.S. providers hosting primarily in U.S. or with mixed distribution. For example, SendGrid is headquartered in the U.S. .
2. GDPR Compliance: Mailjet was GDPR ready before May 2018, with AFAQ/AFNOR certification U.S. providers often adopt compliance but may depend on legal frameworks like EU-US DPF or standard contractual clauses. .
3. Free Tier Flexibility: Mailjet’s free plan includes features sufficient for many startups or small operations, though with branding and send limits. U.S. competitors like Mailchimp have in recent years limited free tiers or increased costs for list size. .

Use Cases Best Suited to Mailjet

• Businesses or organisations based in the EU, or with significant EU traffic, which require servers and data residency within the European Union for legal or compliance reasons.
• Developers needing transactional email or SMTP relay (API-based) plus marketing campaign tools in one platform.
• Teams that need predictable volume-based pricing, collaboration tools, and advanced features like A/B testing, dynamic content, or automation.
• Organizations desiring high privacy & security standards — ISO 27001, AFAQ/AFNOR, CSA — and who are wary of using wholly U.S.-based providers that may be subject to U.S. laws impacting data privacy.

Potential Drawbacks to Evaluate

• Even though Mailjet is GDPR-compliant, legal risks around international data transfers may still arise if customers select non-EU hosting or external integrations. Standard contractual safeguards are used, but organisations with highest risk sensitivity may need to audit carefully.
• Free plan includes branded emails and stricter daily caps (200 mails/day) which might hamper usage if regular volume spikes are needed.
• Open source is not available. If you are looking for a fully transparent, self-hostable option, you may need to look at open-source alternatives.
• Some advanced features (dedicated IPs, priority support, enterprise deliverability) require moving to higher-cost tiers. As volume increases, costs can rise steeply.

Conclusion

Mailjet stands out as a strong, GDPR-compliant European alternative to U.S.-based email service providers. With its EU hosting, certifications like AFAQ and ISO 27001, and data residency guarantees, it offers peace of mind for privacy-conscious businesses and organizations operating in or with the EU. Its range of plans—from free through Custom enterprise level—cover many scales of need, especially those looking for transactional, SMTP relay, and campaign-based usage.

If you prioritise strict data protection, EU sovereignty over your data, and staying fully within GDPR law, Mailjet is among the top of your list.