Overview
Mailjet and Loops represent different generations of email platforms. Mailjet is a proven platform since 2010 with transactional and marketing combined at budget prices. Loops is a modern platform built specifically for SaaS with cleaner UX and event-based automation. See our Loops comparison for more alternatives.
Different Philosophies
Mailjet: Affordable email for everyone. Marketing teams, developers, SMBs. General-purpose with broad capabilities.
Loops: Modern email for SaaS. Event-based automation, user properties, product-focused workflows. Purpose-built for software companies.
This isn't about which is "better." It's about which philosophy matches your needs.
The SaaS Question
If you're building SaaS, Loops understands your world:
- Event-based automation triggers
- User lifecycle focus
- Modern API design
- Clean, uncluttered UX
Mailjet can do these things, but you configure them yourself. Loops is designed around SaaS patterns.
Pricing Difference
At 10,000 contacts:
- Mailjet: $35-50/month
- Loops: ~$99/month
Mailjet is roughly half the price. That's significant for bootstrapped startups. Loops includes unlimited sends and all features, which matters at scale.
Real-Time Collaboration
Mailjet's Passport editor is unique. Multiple people editing the same email simultaneously, like Google Docs. Loops doesn't have this. For teams with marketing/design collaboration, Passport is genuinely useful.
Platform Maturity
Mailjet: 15 years of operation, owned by Sinch (communications company), established infrastructure.
Loops: Newer company, rapidly growing, modern technology stack.
Both are reliable, but Mailjet has a longer track record.
Transactional Email
Both include transactional email. Mailjet has it built-in with mature API and SMTP. Loops includes transactional free with paid plans. Neither requires a separate product like Mailchimp/Mandrill.
For SaaS with Stripe
Neither platform has native Stripe integration. Mailjet requires third-party connections. Loops doesn't offer Stripe integration.
If you're SaaS with Stripe billing, consider Sequenzy. We combine SaaS focus (like Loops) with native Stripe integration at a better price point ($49 vs $99).
Making the Choice
Choose Mailjet for budget email with transactional support and real-time collaboration. Choose Loops for modern SaaS-focused platform with cleaner UX. For SaaS with Stripe, consider Sequenzy.
Generational Platform Differences
Mailjet represents the reliable incumbent. Built in 2010, battle-tested over 15 years, owned by a major communications company. You know what you are getting: solid email delivery with marketing features that work.
Loops represents the modern challenger. Built specifically for SaaS with contemporary design patterns and developer workflows. The interface is cleaner, the automation is more intuitive for software companies, and the pricing is simpler. But it lacks the track record and feature maturity that comes with time.
Event-Based vs Campaign-Based Automation
Loops treats product events as first-class citizens. User signs up, user activates feature, user upgrades plan. These events drive automated workflows naturally. Mailjet can handle events through its API but the automation builder is not designed around product events as a core concept.
For SaaS companies where user behavior drives communication strategy, Loops' event-first approach reduces the configuration needed to build meaningful automated sequences. For businesses with campaign-driven marketing, Mailjet's approach is more natural.
The Stripe Integration Gap
Neither Mailjet nor Loops integrates natively with Stripe. For SaaS companies, this is a significant gap since subscription billing events are among the most important triggers for automated communication. Trial ending, payment failed, plan upgraded - these events demand immediate, automated responses.
Sequenzy fills this gap with native Stripe OAuth integration, enabling payment-triggered automation at $49/month. If Stripe events are central to your email strategy, this capability matters more than either platform's other features.
User Behavior Tracking
Loops was built specifically for SaaS products, so it treats product events and user properties as first-class data for triggering messages. Mailjet is a general-purpose platform that tracks basic attributes but was not designed around product events the same way. If precise email automation tied to in-app behavior is the goal, Loops has the deeper native support; Mailjet asks you to build more of that yourself.
Trial and Onboarding Optimization
Loops triggers onboarding messages directly from product milestones through its event-based system, reflecting its SaaS-only focus. Mailjet can run drip sequences too, through its Premium automation plan, but those sequences are built for general marketing rather than tied to specific in-app actions. For SaaS onboarding tied closely to product usage, Loops requires less custom wiring.
Company-Level vs User-Level Communication
Grouping users by company and triggering emails from account-level events is a common need in B2B SaaS. Loops supports user properties natively as part of its core design, while Mailjet handles this through general-purpose attributes rather than dedicated account objects. Mailjet's real-time collaborative editor is a genuine advantage for teams writing emails together, but it does not change how well either tool handles account-based targeting.
Use-case matchups
| Situation | Better fit | Why |
|---|---|---|
| You need budget marketing plus transactional email | Mailjet | Mailjet is cheaper in the listed 10k-contact scenario and combines both email types. |
| You are a SaaS startup building event-based lifecycle email | Loops | Loops is designed around SaaS users, product events, and modern workflow patterns. |
| Your team collaborates on email design | Mailjet | Mailjet Passport is a real-time collaborative editor. |
| You want cleaner SaaS UX and simpler pricing | Loops | Loops is the modern SaaS-focused product in this comparison. |
| You need native Stripe-triggered automation | Sequenzy | Neither Mailjet nor Loops has native Stripe integration in the page data. |
Best Fit by SaaS Email Scope
Best email platform for budget campaigns and transactional sending
Mailjet fits teams that need lower-cost campaign email, transactional email, SMTP/API sending, and collaborative template work in one general platform. It should be tested first when budget, mature infrastructure, and team editing matter more than a SaaS-specific lifecycle workflow.
Best SaaS email platform for product-led lifecycle messaging
Loops is the better fit for startups that want modern SaaS lifecycle workflows built around users, events, onboarding, activation, and retention. Choose it when product and growth teams need a cleaner way to ship lifecycle email without configuring a broader email service.
Best SaaS email platform for Stripe-triggered transactionals
Sequenzy fits subscription teams that need lifecycle email, transactional messages, and billing-event triggers in one workflow. It is the more relevant comparison when trial, payment, dunning, upgrade, and receipt paths matter more than collaborative campaign editing.
Pricing reality
Mailjet is significantly cheaper here at $35-50/month versus Loops around $99/month. That price gap is real for bootstrapped teams, especially if they only need basic campaign and transactional capability.
Loops is more expensive because it is buying SaaS focus, cleaner UX, event-based thinking, and unlimited sends. If those SaaS-specific workflows save setup time or improve lifecycle performance, the premium can be justified.
Review signals
Mailjet reviews emphasize collaboration, EU/GDPR positioning, and combined marketing plus transactional value. The drawbacks are daily free-plan limits, basic automation, and interface friction.
Loops reviews emphasize SaaS focus, clean UI, and event-based triggers. The cautions are newer-platform risk, limited integrations, and basic reporting.
Migration checklist
- Export contacts, attributes, events, templates, automations, transactional templates, suppressions, and webhooks.
- If moving to Loops, map product events and user properties before rebuilding onboarding and lifecycle flows.
- If moving to Mailjet, adapt event-based Loops workflows into Mailjet's more traditional automation model.
- Reconfigure SPF, DKIM, DMARC, tracking domains, return-path, sender identities, and webhook endpoints.
- Test transactional flows, campaigns, lifecycle sequences, bounces, unsubscribes, and analytics.
- Keep both systems active until event counts, suppressions, and active automations are verified.
Decision checklist
- Choose Mailjet if cost, maturity, and unified general-purpose email matter most.
- Choose Loops if SaaS-specific UX and event-based lifecycle automation matter more.
- Choose Sequenzy if native Stripe billing triggers are central to the email strategy.
