Mailjet Review 2026 — Best Email Platform for Collaborative Teams

Updated: May 2026 • Tested for 4 weeks • Reading time: 12 min

Mailjet, now part of the Sinch group alongside Mailgun, offers a unique value proposition in the email marketing space: a platform designed for collaborative teams. Its standout feature — real-time collaborative email editing (like Google Docs for email) — makes it especially valuable for agencies, marketing teams, and organizations where multiple people need to review and approve campaigns. We tested Mailjet for 3 weeks, evaluating its collaborative editor, API, deliverability, and marketing-transactional email integration. Here's our complete Mailjet review for 2026.

Quick Overview

Feature	Details
Best For	Teams, agencies, and businesses needing collaborative email creation
Starting Price	Free / $15/mo for Essentials plan
Free Plan	Yes, 6,000 emails/month (up to 200/day cap)
Collaboration	Real-time collaborative editing, comments, approval workflows
Transactional	REST API + SMTP for transactional emails
Automation	Basic trigger-based automations
A/B Testing	Yes, subject and content with auto-winner
API Support	REST API + SMTP with 6 language client libraries

What We Love About Mailjet

1. Real-Time Collaborative Email Editing

Mailjet's collaborative email editor is genuinely unique. Multiple team members can edit the same email template simultaneously, with changes visible in real-time — similar to Google Docs. Comments, suggestions, and approval workflows are built directly into the editor. This eliminates the painful back-and-forth of exporting, reviewing, and re-importing email designs. For agencies and marketing teams, this feature alone can cut campaign production time by 50%.

2. Unified Marketing + Transactional Email

Mailjet sends both marketing campaigns and transactional emails (order confirmations, password resets, notifications) from a single platform with a unified sending infrastructure. Both channels benefit from the same deliverability settings and reputation management. The API supports both REST and SMTP, making it easy for developers to integrate transactional sending alongside marketing automation.

3. Powerful API and Developer Tools

Mailjet offers a comprehensive REST API, SMTP relay, and client libraries for Python, PHP, Ruby, Node.js, Java, and Go. The API supports contact management, campaign creation, template management, statistics, and transactional sending. Webhooks provide real-time event notifications. For businesses that need to integrate email deeply into their applications, Mailjet's developer tools are excellent.

4. Built-in A/B Testing and Analytics

Mailjet's A/B testing supports subject line and content variation testing with automatic winner selection based on opens or clicks. The analytics dashboard provides detailed campaign performance data: opens, clicks, bounces, unsubscribes, spam complaints, and geographic breakdowns. Real-time reporting shows campaign performance as it happens.

Where Mailjet Falls Short

1. Automation Is Basic

Mailjet's marketing automation capabilities are limited compared to dedicated automation platforms. There's no visual automation builder with conditional branching. The platform supports basic trigger emails (welcome, birthday, abandoned cart) but lacks the sophisticated multi-step sequences available in ActiveCampaign or ConvertKit.

2. Interface Can Feel Technical

Mailjet's interface is more technical than consumer-friendly platforms like Mailchimp or Flodesk. With API docs, SMTP settings, and developer tools sharing space with marketing features, non-technical users may find the dashboard overwhelming. The platform clearly serves both developers and marketers, which sometimes means neither group gets a perfectly tailored experience.

3. Template Selection Is Small

Mailjet offers around 30 email templates, which is limited compared to industry leaders. The drag-and-drop builder is functional but not as refined as Campaign Monitor or Mailchimp. Custom HTML templates are well-supported via the API and template language.

Pricing Breakdown

Plan	Price	Key Features
Free	$0/mo	6,000 emails/month (200/day cap), 1 user, basic analytics, collaborative editor
Essentials	$15/mo (billed annually)	15,000 emails/month, unlimited users, A/B testing, advanced analytics, support
Premium	$25/mo (billed annually)	30,000 emails/month, everything in Essentials + priority support, advanced segmentation
Custom	Custom pricing	Custom volume, dedicated IP, SLA, dedicated support, API priority routing

Pros & Cons

Mailjet vs Competitors

Feature	Mailjet	Mailchimp	ActiveCampaign
Starting Price	Free / $15/mo	Free / $13/mo	$15/mo (1,000 contacts)
Team Collaboration	✅ Real-time editing	❌ No	❌ No
Transactional Email	✅ REST API + SMTP	❌ No	❌ No
Free Plan	6,000 emails/month	10,000 emails/month	14-day trial only
Automation Depth	★★☆☆☆	★★★☆☆	★★★★★
API Quality	★★★★★	★★★☆☆	★★★☆☆
Template Selection	30+ templates	500+ templates	150+ templates

Frequently Asked Questions

Does Mailjet have a free plan?

Yes, Mailjet offers a free plan with 6,000 emails per month (up to 200/day) including the collaborative editor, basic analytics, and 1 user seat. It's a good option for small teams getting started.

Can Mailjet send transactional emails?

Yes, Mailjet supports transactional emails via REST API and SMTP relay, alongside marketing campaigns. This unified approach means you manage deliverability settings, authentication, and reputation for both types of email from one platform.

How does real-time collaboration work in Mailjet?

Mailjet's collaborative editor allows multiple team members to edit the same email simultaneously, with changes appearing in real time. You can leave comments, tag team members, set approval workflows, and track version history — similar to Google Docs.

Is Mailjet good for developers?

Yes, Mailjet offers an excellent developer experience with comprehensive REST API, SMTP relay, webhooks, and client libraries in 6 programming languages (Python, PHP, Ruby, Node.js, Java, Go).

How does Mailjet compare to Mailgun?

Both are part of Sinch. Mailjet is designed for marketing teams with a collaborative editor and campaign tools. Mailgun is designed for developers with a focus on API-based transactional sending. Many businesses use both — Mailjet for marketing, Mailgun for transactional.

Final Verdict

How We Test

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Disclosure: CMZ Reviews is supported by our readers. We may earn a commission from qualifying purchases through affiliate links on this page, at no additional cost to you. All reviews are based on independent testing and research.