I Compared Sender vs Mailjet in 2025 – Here Is What I Found

Sender’s drag-and-drop editor strikes the perfect balance between simplicity and flexibility. You can create professional newsletters in minutes, not hours. The platform’s got responsive templates that adjust automatically for mobile, plus email A/B testing to optimize your campaigns.

You can schedule sends for the perfect timing, launch SMS campaigns alongside your emails, and everything is accessible through an interface that just makes sense. You’re not digging through complicated menus trying to find basic functions.

Mailjet’s got a solid drag-and-drop editor too, with a real focus on responsive design. But here’s where it gets interesting—the collaborative editing feature lets team members work simultaneously on the same template. You can leave comments right on design elements and lock sections so nobody accidentally messes them up.

The platform also includes email A/B testing to refine your campaigns. The template selection leans more corporate and traditional, which is perfect for B2B but might feel a bit restrictive if you’re looking for something more creative.

Winner: Sender edges ahead if you’re a solo marketer or small team focused on ease of use and modern templates. Mailjet wins when team collaboration features matter.

Sender offers transactional email functionality through SMTP and REST API with near-instant delivery for password resets, order confirmations, OTPs, and shipping alerts. The managed IP system (shared or dedicated) maintains up to 99% deliverability through bounce monitoring, anti-abuse filters, and authentication.

Dynamic templates use Liquid syntax for personalization, and real-time logs with detailed analytics make troubleshooting straightforward. The 10MB attachment support handles invoices and receipts securely. For small businesses and growing SaaS platforms, it provides enterprise-grade reliability.

Mailjet really shines here. Built on Mailgun infrastructure, it handles both marketing and transactional emails without breaking a sweat. The REST API and SMTP relay are genuinely developer-friendly with excellent documentation.

You’re getting webhooks for real-time tracking, detailed logs, and the ability to manage high volumes reliably. Running a SaaS platform or ecommerce store that sends thousands of transactional emails every day? Mailjet’s infrastructure handles it smoothly.

Winner: Tie—Sender offers excellent transactional capabilities for small businesses, while Mailjet dominates for high-volume enterprise needs with Mailgun infrastructure.

Sender gives unlimited automation on the free plan. The platform offers pre-built workflows like welcome series, abandoned cart recovery, thank you emails, and so on.

You can automate both email and SMS campaigns together for true multi-channel sequences, plus use dynamic content to personalize messages. Setting up automation is actually simple: pick a template, customize the emails, hit activate. 

Mailjet’s automation has improved recently with their new drag-and-drop workflow builder and prebuilt automation templates. You can choose from ready-to-use workflows for onboarding, re-engagement, and lead nurturing—though the selection is more limited than Sender’s.

The visual builder lets you set up triggered emails based on subscriber actions like sign-ups, purchases, or property updates. However, the automation is only available on Premium plans (starting at $27/month). The triggers and conditions are more basic compared to dedicated automation platforms.

Winner: Sender takes this category easily with generous free automation and more advanced workflows.

Sender provides live reporting with all the metrics that actually matter—open rates, click-through rates, conversions, bounce rates. The newsletter heatmaps are pretty cool—they visually show which parts of your email get the most engagement, helping you figure out what content really resonates.

Real-time tracking means you can watch results as they roll in and make quick adjustments for future campaigns.

Mailjet goes deeper with analytics, though the most advanced features are reserved for Premium and Custom plans. The statistics dashboard is comprehensive—you’re getting detailed breakdowns of deliverability rates, soft and hard bounces, unsubscribe patterns, click maps.

You can compare campaigns side-by-side to see what’s performing better. The level of detail is impressive, particularly for tracking deliverability issues. Though honestly, the interface can feel overwhelming when you just want quick insights.

Winner: Mailjet offers more granular analytics, but Sender provides everything most businesses actually need in a cleaner interface.

Sender includes a landing page builder directly in the platform—a feature that saves you from paying for a separate tool. You can create signup forms with various triggers (exit intent, time delay, scroll depth), pop-ups with gamification elements, and full landing pages to capture leads.

The builder includes GDPR-compliant consent collection forms to keep you legally covered. Templates are mobile-responsive, and integration with your email campaigns is seamless—incredibly valuable for small businesses running lead generation campaigns.

Mailjet also has landing pages, but only on Premium plans. You get form builders and subscription widgets for your website, plus GDPR-compliant double opt-in forms to maintain compliance. The forms are customizable and can be embedded on your site.

However, the landing page functionality is more basic compared to dedicated tools, and free plan users are limited to forms only—which can be frustrating when you’re trying to run cohesive campaigns on a budget.

Winner: Sender offers more comprehensive lead generation tools with landing pages, gamification, and flexible popup triggers—all available on the free plan. Mailjet’s landing pages require a Premium subscription, making Sender the clear choice for budget-conscious businesses.

Sender handles list management efficiently with a dual approach: Groups for static lists and Segments for dynamic, auto-updating filters. You can create custom fields and segment subscribers by subscription status, demographics, campaign activity, SMS engagement, ecommerce metrics, and more.

The segments automatically update when subscribers meet your conditions—no manual work needed. List hygiene is simple too, with built-in filters for bounced and invalid contacts. Import via CSV, API, or direct ecommerce integrations that preserve full interaction history.

Mailjet uses a property-based contact management system with flexible segmentation filters. You can segment by contact properties (location, age, language, custom fields), subscriber activity (opens, clicks within timeframes), and list subscription dates.

The platform includes a Preference Center where subscribers manage their own interests and email frequency—changes sync automatically with segments. The built-in email validation tool checks addresses for validity before sending, helping maintain deliverability. Segmentation is only available on paid plans, which may limit smaller businesses.

Winner: Tie. Both platforms offer similar list management options.

Sender integrates smoothly with major ecommerce platforms—Shopify, WooCommerce, PrestaShop. The platform offers abandoned cart email workflows, product recommendations in emails, purchase tracking. For small to medium online stores, it covers the essentials without overcomplicating things. The ecommerce focus is evident in both the template selection and automation workflows.

Mailjet offers ecommerce integrations with WooCommerce (native plugin), PrestaShop, and Shopify (via third-party connectors or Zapier). The platform lacks a product recommendation engine and advanced ecommerce automation features like cart abandonment workflows built-in.

If you’re running a serious online store with a large catalog requiring sophisticated product marketing, you’ll likely find Mailjet’s ecommerce capabilities more basic compared to dedicated platforms.

Winner: Sender’s better equipped for ecommerce businesses with native integrations and pre-built workflows.

Sender supports SPF, DKIM, and DMARC authentication to protect your sender reputation. Setup is straightforward with clear documentation. Sender is headquartered in Lithuania (EU) and is fully GDPR-compliant, making it ideal for businesses serving European customers. The platform monitors your sender score and provides recommendations to maintain good deliverability.

Mailjet also provides comprehensive authentication options—SPF, DKIM, custom domain setup. Being GDPR-compliant and built in France (EU), security and compliance are central to their infrastructure from the ground up. The documentation’s detailed, though sometimes a bit technical for non-developers.

Winner: Tie—both platforms handle authentication well with solid security practices.

Sender offers dedicated IPs on higher-tier plans, recommended for businesses sending over 500,000 emails monthly. Shared IPs are allocated for free and standard plans.

The platform provides automated IP warmup that gradually builds your sender reputation over 4-8 weeks using your most engaged subscribers. You can also request manual control if you prefer to manage the warmup process yourself, giving you flexibility based on your expertise level.

Mailjet provides dedicated IPs with a structured warm-up plan—essential when you’re establishing sender reputation. The platform monitors reputation closely and offers feedback loops with major ISPs. This infrastructure-level attention makes a real difference for high-volume senders.

Winner: Mailjet offers superior IP management with ISP feedback loops and deliverability expertise for enterprise senders. Sender provides solid features for smaller businesses.

Sender maintains solid deliverability rates with good infrastructure relationships with major email providers. The platform emphasizes list hygiene and provides tools to reduce bounces.

Authentication setup (SPF, DKIM, DMARC) is straightforward with clear documentation. Features like engagement-based segmentation, automated bounce handling, and list cleaning filters help keep your sender reputation healthy.

Mailjet, built on Mailgun’s infrastructure, has excellent deliverability credentials. The platform maintains strong relationships with ISPs, offers detailed deliverability reporting, and helps diagnose issues when emails don’t land properly. The email validation tool proactively prevents bounces. For businesses where deliverability is absolutely critical, Mailjet’s infrastructure is reassuring.

Winner: Mailjet edges ahead with superior infrastructure and detailed deliverability tools.

Sender has integrations with popular platforms like WordPress, Shopify, WooCommerce, PrestaShop, and Zapier. The API allows developers to build custom integrations with CRMs and ecommerce systems, with straightforward documentation to guide setup.

The Zapier connection expands possibilities to thousands of additional apps, making it flexible enough for most small to medium businesses.

Mailjet boasts over 100 integrations and a robust REST API that developers really appreciate. The documentation’s comprehensive, with code examples in multiple languages. The platform integrates well with business software, though some key ecommerce connections require workarounds. For development teams, Mailjet’s API capabilities are significantly stronger.

Winner: Mailjet for developer/enterprise environment. For most SMB marketers, Sender meets needs well.

Sender provides 24/7 email and live chat support even on the free plan—which is genuinely impressive. The support team is knowledgeable and helpful, walking you through issues patiently. Phone support is only available for Enterprise, though most users don’t miss it. There’s also a comprehensive knowledge base with training videos.

Mailjet’s support structure is tiered. Free plan users only get access to the help center—no human support. Email support becomes available on paid plans, with priority support at higher tiers. Phone and live chat support requires sending 50,000+ emails monthly. When you do reach support, they’re competent, but the barrier to access can be frustrating when you’re just starting out.

Winner: Sender takes this decisively with generous 24/7 support even for free users.

Sender’s standout features include robust SMS marketing with free credits on Pro plans (equal to your monthly plan value). You can create multi-channel automation workflows combining email and SMS for cart abandonment, welcome series, and re-engagement campaigns—all from one platform. You get unlimited automation workflows, even on the free plan, which is rare at this price point.

Mailjet’s unique features center on collaboration and developer tools. Real-time co-editing, comment functionality, approval workflows, granular permission management—it makes it excellent for teams. The MJML framework for creating responsive emails appeals to developers. Sub-account management is robust if you’re running an agency.

Winner: Depends on your needs—Sender for multi-channel marketing, Mailjet for team collaboration.

G2 reviewers highlight Sender’s outstanding free tier as ideal for startups and small businesses, providing robust email marketing capabilities without cost barriers. Users praise the user-friendly interface, solid automation features, and responsive templates that simplify campaign creation.

The customer support stands out as exceptional, with reviewers noting helpful, patient assistance. Easy integration options and strong segmentation tools round out the platform’s appeal as a cost-effective solution for growing businesses.

Mailjet users on G2 appreciate its user-friendly interface and ease of handling multiple email models from the start. Reviewers highlight the advanced automation and segmentation capabilities that enable effortless personalized campaigns, along with real-time analytics for tracking deliverability. The HTML export feature and landing page creation tools add extra value.

However, users note limitations in template customization options and feel the analytics dashboard could offer more detailed insights compared to competing platforms.

Capterra reviewers appreciate Sender for its ease of use and strong deliverability rates. Users emphasize the platform’s affordability and feature-rich free tier, along with quick setup and quality customer service. The analytics provide useful insights for campaign optimization.

Though native CRM connections are limited, integration tools like Zapier fill the void nicely. It’s regarded as a reliable, budget-friendly option that covers all essential email marketing needs.

Mailjet users on Capterra value its straightforward setup and beginner-friendly interface, featuring a drag-and-drop editor and AI capabilities that save time. Reviewers appreciate the well-documented API, making it accessible for those new to email marketing.

However, some users express concerns about pricing, along with limitations in image storage capacity and occasional platform lag that can disrupt workflow. It’s viewed as a reliable option, though affordability remains a consideration for some.

Reddit reviewers commend Sender for offering a truly functional free tier that stands out from competitors with limited features or deliverability issues. Users switched after frustrations with other services and found Sender’s 2,500 subscriber limit and excellent deliverability a game-changer.

The platform gets praise for its simplicity, abundant templates, and genuinely helpful customer support that provides thorough assistance. Features like landing pages, automated workflows, and winback sequences make it a reliable, budget-friendly choice for growing contact lists effectively.

Mailjet users on Reddit report mixed experiences, with some expressing frustration over the platform’s limitations and practices. Former users cite delivery problems that required extensive back-and-forth with support to resolve, ultimately leading them to switch providers.

Reviewers mention concerns about contact management restrictions on the free plan, including intentional deletion of contacts and send limits that feel designed to push users toward paid tiers. The platform’s handling of contacts and email quotas has left some users feeling the service lacks transparency in its free plan offerings.

Yes, migration is straightforward. Export contacts as CSV from one platform and import to the other. Both support standard fields like email addresses, names, and custom properties.

The process takes 15-30 minutes depending on list size. Ensure custom fields map correctly during import, and note that automation workflows need manual recreation. Neither platform charges migration fees.

Mailjet wins for dual-purpose sending. It’s built to handle both email types from one platform with robust API, detailed logging, and webhook support for high-volume transactional needs.

Sender handles basic transactional emails through SMTP and API with up to 99% deliverability—perfectly adequate for small to medium businesses. If your sending is primarily marketing with occasional transactional emails, Sender’s superior marketing features and affordability make it the better choice.

Deliverability depends on many factors (list hygiene, authentication, content, sending behaviour). Both platforms support the necessary technical basics (DKIM/SPF, dedicated IPs at higher tiers).

For SMB use, Sender gets excellent reviews for deliverability value. For enterprise/high-volume, Mailjet may offer more infrastructure muscle. Ultimately your sending practices matter more than platform alone.