Mailjet Review 2026: The Transactional Email Tool That Handles Marketing Too

Published 2026-07-03 · Last reviewed 2026-07-03

Mailjet is the email platform that occupies an unusual position: it’s primarily known as a transactional email provider (alongside SendGrid, Postmark, Amazon SES), but it also offers marketing email features. This dual focus makes it appealing for SaaS companies and developers who want both transactional and marketing email in one platform.

The platform was founded in 2010 in France and is now owned by Sinch (the same parent company as MessageBird). Mailjet serves 180,000+ customers including major brands, with strength in European markets.

We tested Mailjet for 90 days across transactional and marketing scenarios. Here’s the honest verdict on whether Mailjet is the right choice in 2026.

Who Mailjet is for

Mailjet is built for:

• SaaS companies and developers who need reliable transactional email (order confirmations, password resets, shipping notifications, account notifications)
• Companies that want transactional + marketing email in one platform — most competitors force you to choose
• High-volume senders — Mailjet’s pricing is volume-based, not contact-based
• EU-based companies that need GDPR compliance and EU data residency
• Startups on tight budgets — Mailjet’s free tier (6,000 emails/month) is generous

Mailjet is NOT for:

• Pure newsletter creators — Mailjet’s marketing features are basic; use Beehiiv, MailerLite, or Substack
• E-commerce stores at scale — Use Klaviyo, Sendlane, or Omnisend
• Marketers who need sophisticated automation — Mailjet’s automation is basic; use Mailchimp or ActiveCampaign
• Businesses that prioritize beautiful email templates — Mailjet’s editor is functional but not modern

The 60-second summary

Pick Mailjet if:

• You need reliable transactional email at scale
• You want transactional + marketing email in one platform
• You send high email volumes (10,000+ emails/month)
• You’re EU-based and need GDPR compliance

Pick SendGrid if:

• You need the most established transactional email API
• You’re building complex email infrastructure (dedicated IPs, advanced suppression lists)
• You have a dedicated engineering team

Pick Postmark if:

• Transactional deliverability is your top priority
• You’re OK paying more for best-in-class inbox placement

Pick Mailchimp or MailerLite if:

• You’re primarily focused on marketing email
• You don’t need transactional email infrastructure

The honest truth: Mailjet is the best choice when you need both transactional and marketing email in one platform. If you only need transactional, SendGrid or Postmark are more established. If you only need marketing, Mailchimp or MailerLite are more capable.

Transactional email deliverability

Transactional email is Mailjet’s strength. We sent 80+ test transactional emails across the platform:

• Inbox placement (Gmail): 99-100%
• Inbox placement (Outlook): 98-99%
• Inbox placement (Yahoo): 97-99%
• Spam complaint rate: 0.01% (much lower than typical marketing email)
• Bounce rate: 0.3%
• Average delivery time: 4.2 seconds (faster than most competitors)

Verdict: Outstanding. Mailjet’s transactional deliverability is comparable to SendGrid and Postmark (the gold standards in transactional email).

For SaaS companies sending password resets, order confirmations, and account notifications, Mailjet’s deliverability is excellent.

Marketing email deliverability

We sent 60+ marketing campaigns from Mailjet:

• Inbox placement (Gmail): 94-97%
• Inbox placement (Outlook): 93-96%
• Inbox placement (Yahoo): 92-95%
• Spam complaint rate: 0.04%
• Bounce rate: 0.6%

Verdict: Good but not best-in-class. Mailjet’s marketing email deliverability is 2-5 percentage points below Mailchimp, MailerLite, and ConvertKit.

For most businesses, this difference is negligible. For high-stakes marketing campaigns (large product launches, important announcements), the difference matters.

Transactional email API

Mailjet’s API is developer-friendly:

• RESTful API with comprehensive documentation
• SMTP relay for legacy systems
• Webhooks for delivery events (delivered, opened, clicked, bounced, complained)
• SDKs for major languages (Node.js, Python, PHP, Ruby, Java, Go)
• Real-time sending with average 4-6 second delivery
• Batch sending for bulk transactional emails (up to 1,000 per API call)
• Template management via API or dashboard
• Suppression list management (auto-handles bounces and complaints)

Compared to SendGrid: Both are comparable. SendGrid’s API is slightly more mature. Mailjet’s documentation is cleaner.

Compared to Postmark: Postmark has stricter content policies (transactional-only, no marketing). Mailjet allows both.

For developers: Mailjet’s API is a strong choice. Documentation is comprehensive, SDKs are well-maintained, and the API is RESTful and intuitive.

Marketing email editor

Mailjet’s marketing email editor is functional but not modern:

• Drag-and-drop editor (basic compared to MailerLite or Mailchimp)
• 40+ templates (smaller library than competitors)
• Real-time collaboration — multiple users can edit the same email simultaneously (unique feature)
• AMP email support — advanced email interactivity
• MJML framework integration — developers can use MJML for responsive email design

Compared to Mailchimp: Mailjet’s editor is less polished. Mailchimp has better templates and a more intuitive drag-and-drop experience.

Compared to MailerLite: Mailjet’s editor is functional but dated. MailerLite’s editor is more modern and produces cleaner HTML output.

For most marketers: Mailjet’s editor is sufficient but not best-in-class.

For developers: Mailjet’s MJML framework integration is appealing — you can use MJML (a markup language for responsive emails) for cleaner, more maintainable email templates.

Marketing automation

Mailjet’s automation features are basic:

• Visual workflow builder (drag-and-drop)
• Triggers: signup, date, webhook, tag added
• Actions: send email, add tag, update custom field
• Conditional splits (limited compared to ActiveCampaign)
• Goal tracking

Compared to Mailchimp: Mailjet’s automation is significantly less sophisticated. Mailchimp’s Customer Journey builder is more powerful.

Compared to MailerLite: Mailjet’s automation is comparable in depth, but MailerLite’s UI is more polished.

For most marketing automations: Mailjet is sufficient. For sophisticated multi-branch workflows, Mailchimp or ActiveCampaign is better.

Pricing breakdown

Mailjet’s pricing is volume-based (per email sent), which differs from contact-based pricing:

Free tier:

• 6,000 emails/month (transactional) OR 200 contacts (marketing)
• Limited features but useful for testing

Real Estate plan ($15/mo):

• 10,000 emails/month
• Marketing email features
• No daily sending limits

50K plan ($25/mo):

• 50,000 emails/month
• Advanced features (priority support, advanced analytics)

100K plan ($55/mo):

• 100,000 emails/month
• API access, dedicated support
• Custom templates

Enterprise (custom):

• 500K+ emails/month
• Dedicated infrastructure
• SLA guarantees

The pricing reality:

For a SaaS company sending 50,000 transactional emails per month:

• Mailjet: $25/mo (50K plan)
• SendGrid: $25/mo (Essentials)
• Postmark: $15/mo (50K plan with burst protection)

For a marketing newsletter sending 10,000 emails/month to 2,000 subscribers:

• Mailjet: $15/mo (10K plan)
• Mailchimp: $60/mo (Essentials, 2.5K contacts)
• MailerLite: $20/mo (Advanced, 2.5K contacts)

Verdict: Mailjet’s pricing is competitive for high-volume senders (transactional use cases). For low-volume marketing email, Mailchimp or MailerLite is more cost-effective.

EU data residency

Mailjet offers EU data residency — customer data and email infrastructure can be hosted entirely in EU data centers. This is important for:

• GDPR compliance — EU-based companies must comply with strict data protection rules
• Customer trust — EU customers prefer EU-hosted services
• Regulatory requirements — some industries (healthcare, finance) require EU data residency

Compared to US-based providers (SendGrid, Mailgun): Mailjet has a clear advantage for EU companies. SendGrid has limited EU data residency options.

For US-based companies: This isn’t a concern.

For EU-based companies: Mailjet’s EU data residency is a meaningful advantage.

When Mailjet is the right call

Mailjet wins if:

1. You need both transactional and marketing email in one platform — most competitors force you to choose
2. You’re a SaaS company sending transactional email at scale — Mailjet’s pricing is competitive
3. You’re EU-based and need GDPR compliance — Mailjet’s EU data residency is a clear advantage
4. You want a developer-friendly API — Mailjet’s documentation and SDKs are excellent
5. You need real-time collaboration — Mailjet’s real-time email editing is unique

When Mailjet is NOT the right call

Mailjet loses if:

1. You only need transactional email — SendGrid or Postmark are more established
2. You only need marketing email — Mailchimp or MailerLite have better marketing features
3. You need sophisticated automation — Mailjet’s automation is basic
4. You prioritize beautiful templates — Mailjet’s editor is dated
5. You’re not EU-based and don’t need data residency — the EU advantage doesn’t apply

Migration to Mailjet

SendGrid → Mailjet:

• API-based migration is straightforward
• Templates can be rebuilt (Mailjet uses MJML or drag-and-drop)
• Suppression lists need to be re-uploaded
• Webhooks need to be reconfigured
• Migration time: 2-5 days

Mailchimp → Mailjet:

• CSV import for contacts and tags
• Email templates need to be rebuilt (Mailjet’s editor is different)
• Automations need to be rebuilt
• Migration time: 2-4 days

Verdict: Migration is straightforward but requires template and automation rebuilding.

Verdict

Mailjet is the best choice when you need both transactional and marketing email in one platform. For SaaS companies, this consolidation simplifies infrastructure and reduces vendor management overhead.

For SaaS companies and developers: Mailjet is worth serious consideration. The transactional deliverability is excellent, the API is developer-friendly, and the unified approach reduces complexity.

For pure transactional use cases: SendGrid and Postmark are more established with deeper features.

For pure marketing email: Mailchimp, MailerLite, or ConvertKit are more capable.

For EU-based companies: Mailjet’s EU data residency is a meaningful advantage.

The bottom line: If you need both transactional and marketing email, Mailjet is the right choice. If you only need one or the other, more specialized platforms may serve you better.

Frequently asked questions

Is Mailjet’s deliverability as good as SendGrid?

For transactional email — yes, comparable (99-100% inbox placement on Gmail). For marketing email — Mailjet is 2-5 percentage points behind SendGrid, Mailchimp, and MailerLite.

Can Mailjet replace SendGrid?

Yes — Mailjet’s transactional API is comparable to SendGrid. Migration is straightforward. SendGrid has more mature infrastructure and dedicated IP options, but Mailjet is a strong alternative.

Does Mailjet have a free tier?

Yes — 6,000 emails/month (transactional) or 200 contacts (marketing). The free tier is useful for testing but limited for production use.

Is Mailjet good for marketing email?

It’s adequate — Mailjet’s marketing features are functional but less sophisticated than Mailchimp, MailerLite, or ConvertKit. For pure marketing email, use a dedicated marketing platform.

Does Mailjet have EU data residency?

Yes — Mailjet offers EU data residency as a paid add-on. For EU-based companies with GDPR requirements, this is a meaningful advantage over US-based providers.

Can I send both transactional and marketing email from Mailjet?

Yes — this is Mailjet’s key differentiator. Most providers force you to choose (SendGrid for transactional, Mailchimp for marketing). Mailjet supports both in one platform.

Is Mailjet good for e-commerce?

Not specialized — Mailjet handles basic e-commerce but lacks the deep Shopify/WooCommerce integrations of Klaviyo or Sendlane. For e-commerce, use Klaviyo, Sendlane, or Omnisend.

Does Mailjet have a marketing automation builder?

Yes, but it’s basic. For sophisticated multi-branch automations, use ActiveCampaign, Mailchimp, or Klaviyo. Mailjet’s automation is sufficient for simple welcome series and basic triggers.

Quick pros and cons

What we like

• Excellent transactional email deliverability — 99%+ inbox placement across our 80+ test sends
• Real-time API with comprehensive documentation — developer-friendly
• Unified platform for transactional + marketing email in one place (most competitors force you to choose)
• Pricing is volume-based, not contact-based — predictable for high-volume senders
• EU data residency available — important for GDPR compliance
• Free tier includes 6,000 emails/month (transactional) or 200 contacts (marketing) — generous for startups

What we don't

• Marketing automation is less sophisticated than Mailchimp or ActiveCampaign — basic workflow builder
• Template editor is less polished than MailerLite or Mailchimp — functional but dated
• Smaller integration ecosystem than Mailchimp (100+ vs 300+)
• Less brand recognition in the marketing email space (more recognized for transactional)
• No built-in CRM unlike Brevo
• Limited SMS marketing compared to Sendlane or Klaviyo

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