Overview
Mailjet and ConvertKit serve completely different markets. Mailjet (owned by Sinch) is a budget-friendly platform combining transactional email and marketing campaigns. ConvertKit is built for creators, bloggers, and course sellers with newsletter-first features and monetization tools. See our ConvertKit alternatives for more options.
Different Businesses, Different Tools
Mailjet is for businesses that need to send transactional emails (receipts, notifications, password resets) alongside marketing campaigns. ConvertKit is for creators who build audiences through newsletters and monetize through courses and digital products. Completely different use cases.
Transactional Email
Mailjet offers robust transactional email with REST API and SMTP relay. ConvertKit has no transactional email capabilities at all. If your business sends any automated app emails, ConvertKit cannot help. This is the most fundamental difference between these platforms.
Creator Monetization
ConvertKit includes digital product sales, paid newsletter subscriptions, tip jars, and the Creator Network for referrals. Mailjet has none of these. For creators monetizing their audience, ConvertKit is purpose-built with commerce features Mailjet cannot match.
Pricing Reality
At 10k contacts, Mailjet costs $35-50/month while ConvertKit costs $119/month. That is a 2-3x price difference. ConvertKit's premium pricing reflects creator-specific features. If you do not need those features, you are overpaying.
Email Design Philosophy
Mailjet Passport offers rich visual editing with real-time collaboration for marketing teams. ConvertKit favors simple, text-focused emails that feel like personal correspondence. Different philosophies, both valid for their respective audiences.
The SaaS Alternative
Neither platform is built for SaaS. Mailjet lacks SaaS-specific features. ConvertKit lacks transactional email and is creator-focused. Sequenzy offers unified marketing and transactional with native Stripe integration and behavioral automation for SaaS businesses.
Making the Choice
Choose Mailjet for transactional + marketing email on a budget with collaboration features. Choose ConvertKit if you are a creator building an audience and monetizing through newsletters and digital products. For SaaS with Stripe integration, consider Sequenzy.
Use-case matchups
| Need | Better fit | Why |
|---|---|---|
| Marketing plus transactional email | Mailjet | Mailjet covers both email types in one platform. |
| Creator audience growth and monetization | ConvertKit | ConvertKit is built around creator email, landing pages, commerce, and paid newsletters. |
| Collaborative email production | Mailjet | Mailjet's editor supports real-time collaboration. |
| Visual creator automations and commerce | ConvertKit | ConvertKit is stronger for creator-focused sequences and monetization. |
| SaaS lifecycle plus transactional email | Sequenzy | Sequenzy adds product and Stripe-aware automation. |
Best Fit by Audience Model
Best email platform for teams needing marketing plus transactional email
Mailjet fits teams that need campaign email, transactional sending, and collaborative template production in one general-purpose email platform.
Best creator email platform for audience monetization
Kit is the better fit when the business runs on creator newsletters, products, paid subscribers, landing pages, and audience-first automations.
Best SaaS email platform for product and billing lifecycle messages
Sequenzy fits software teams that need lifecycle and transactional email connected to product and Stripe events rather than creator commerce.
Pricing reality
Mailjet is listed at roughly $35-50/month at 10,000 contacts. ConvertKit is listed at $119/month for Creator Pro, with Creator around $100/month and a limited free tier. Sequenzy is listed at $49/month for 10,000 contacts.
Mailjet is cheaper and includes transactional email. ConvertKit costs more because the buying case is creator audience management, landing pages, automation, and commerce.
Review signals
The cited Mailjet reviews praise real-time collaboration, EU/GDPR positioning, and combined marketing plus transactional email, while noting daily limits and basic automation. The cited ConvertKit reviews praise creator-focused features, visual automation, and landing pages, while noting design flexibility and reporting limits.
Migration checklist
| Workstream | Moving toward Mailjet | Moving toward ConvertKit |
|---|---|---|
| Contacts | Export subscribers, lists, fields, consent, and suppressions. | Export subscribers, tags, segments, products, paid/free status, and consent. |
| Templates | Rebuild campaigns, transactional templates, and collaborative workflows. | Rebuild broadcasts, sequences, forms, landing pages, and creator templates. |
| Commerce | Keep commerce elsewhere unless Mailjet is only handling email. | Configure products, paid newsletters, commerce, and subscriber tags. |
| Domains | Recreate SPF, DKIM, DMARC, tracking, and bounces. | Recreate sending domains, forms, landing pages, and unsubscribe behavior. |
| Reporting | Export campaign, transactional, and automation reports. | Export subscriber growth, sequence, product, and broadcast reporting. |
Decision checklist
- Choose Mailjet if the team wants lower-cost marketing plus transactional email and collaboration.
- Choose ConvertKit if the team is creator-led and needs audience, commerce, and newsletter tooling.
- Choose Sequenzy if the product is SaaS and needs transactional plus Stripe lifecycle email.
Completely Different Business Models
This comparison only makes sense if you are genuinely evaluating both platforms. Mailjet serves businesses sending transactional and marketing email. ConvertKit serves individual creators monetizing audiences. These are fundamentally different use cases with different needs.
If you are a blogger selling courses, ConvertKit is your tool. If you run a SaaS or e-commerce business needing password resets alongside newsletters, ConvertKit literally cannot do the job. Choose based on what you are, not on feature lists.
The 60% Price Difference
At 10,000 contacts, Mailjet costs $35-50/month while ConvertKit costs $119/month. That $70+ monthly difference adds up to over $800 annually. ConvertKit's premium reflects creator-specific features: digital product commerce, paid newsletters, tip jars, and the Creator Network.
If you actively use those creator features to generate revenue, the premium pays for itself. If you just need email marketing and transactional delivery, you are overpaying significantly with ConvertKit.
Email Design Philosophy Gap
Mailjet's Passport editor supports rich visual email design with real-time collaboration. ConvertKit deliberately favors simple, text-focused emails that feel like personal messages. Neither approach is wrong. They serve different communication strategies.
Marketing teams creating branded campaigns with images and layouts prefer Mailjet's visual tools. Creators building personal relationships through writing prefer ConvertKit's text-first approach. Consider which matches your communication style.
Email Design and Template Flexibility
Mailjet and Kit (ConvertKit) take different approaches to email design. Template variety, customization depth, and mobile responsiveness all affect how your emails look across inboxes. The right email editor can save hours of design time per campaign.
Consider how each platform handles dynamic content, personalization tokens, and conditional blocks. Being able to show different content to different segments within the same campaign reduces the number of emails you need to create and manage.
List Management and Segmentation
Effective email marketing depends on reaching the right subscribers with the right message. Mailjet and Kit (ConvertKit) handle list management differently, from how they count subscribers to how they manage bounces and unsubscribes.
Segmentation capability directly impacts your campaign performance. Look at whether each platform supports behavioral segments, purchase-based targeting, and engagement scoring. More granular smart segments mean more relevant emails and better results.
Deliverability and Sender Reputation
Your email marketing investment is wasted if messages land in spam. Both Mailjet and Kit (ConvertKit) provide deliverability tools, but their approaches to shared vs dedicated IPs, authentication, and compliance differ significantly.
Long-term email deliverability depends on list hygiene, engagement rates, and sender reputation management. Compare how each platform helps you maintain a clean list, identify disengaged subscribers, and optimize sending patterns for better inbox placement.