Mailgun vs Sendinblue: The Best Tools for Email Marketing Automation in 2026
Email marketing remains a cornerstone of digital marketing strategies, even in 2026. For startups and small-to-medium enterprises (SMEs), choosing the right email marketing tool is crucial to not only stay competitive but to also scale effectively. Two giants, Mailgun and Sendinblue (recently rebranded as Brevo), are often at the center of this debate for email marketing automation. But which one truly matches the diverse and evolving needs of startups?
In this article, we break down the core strengths, features, and use cases of Mailgun and Sendinblue to help growing businesses decide which tool is the game-changer for their email marketing efforts this year.
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Why Email Marketing is the Lifeblood of Startups
Despite the rise of social media and paid ads, email marketing offers one of the highest returns on investment (ROI) among digital marketing channels. Studies show that for every $1 spent on email marketing, you can expect a $36 return. Startups need to focus on marketing more than building a product because an amazing product won’t sell if no one knows about it.
With effective email automation tools, startups can streamline customer segmentation, build authentic relationships, and launch targeted campaigns to validate their ideas much faster. That’s where tools like Mailgun and Sendinblue shine, each catering to unique business requirements.
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A Side-by-Side Overview of Mailgun and Sendinblue
1. Sendinblue (Brevo): A Comprehensive Marketing Hub for Startups
Sendinblue, now officially called Brevo, has evolved tremendously since its inception. It’s no longer just about email marketing, it’s an all-in-one digital marketing suite.
- Features:
- Email and SMS marketing campaigns
- A built-in CRM to manage customer relationships
- Marketing automation workflows for advanced segmentation
- SMS integration, Facebook ads, and e-commerce adaptability
- Pricing: Starting at $25/month (for 20,000 emails), Sendinblue appeals to startups and SMEs with tight budgets.
- Best For: Businesses that require a mix of email marketing and robust marketing features like CRM integration can benefit greatly from Brevo’s versatility.
Check out more details about Sendinblue on PCMag’s detailed review of email marketing software.
2. Mailgun: Developer-Friendly and Performance-Oriented
Mailgun is regarded as the go-to email marketing tool for startups emphasizing email deliverability and performance. While it doesn’t serve as a full-scale marketing platform, it excels in its niche: delivering transactional and bulk emails at scale.
- Features:
- Industry-leading deliverability rates
- Advanced A/B testing capabilities
- Real-time analytics and performance insights
- Highly customizable APIs designed for developers
- Inbox preview rendering for high-quality testing
- Pricing: Plans start at $35/month for 50,000 emails, making it slightly more expensive for marketing beginners but beneficial for apps or platforms handling high email throughput.
- Best For: Tech-savvy startups or SaaS companies heavily reliant on transactional emails and custom automated solutions through APIs.
Learn more about Mailgun’s pricing at Mailgun's official pricing page.
Core Comparison and Differentiating Features
1. Email Deliverability
- Mailgun: Known for its industry-leading email deliverability, Mailgun specializes in ensuring that emails get past spam filters and land in inboxes. Perfect for transactional emails.
- Sendinblue: Offers reliable deliverability but isn’t as data-driven compared to Mailgun, making it more suitable for broader marketing campaigns.
2. Marketing Automation
- Sendinblue: This is where Sendinblue excels, providing easy-to-use drag-and-drop automation workflows and templates for behaviors like abandoned carts, welcome emails, and upselling strategies.
- Mailgun: While being more developer-focused, Mailgun doesn’t offer general marketing automation templates but is highly customizable for those who can work with APIs.
3. Ease of Use
- Sendinblue: Known for its user-friendly interface and quick setup, it’s ideal for non-technical teams or startups looking to get started quickly.
- Mailgun: Requires some technical expertise, especially for leveraging its API integrations for advanced use cases.
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Startups Deserve Better Marketing ROI
Before even writing a single line of code, validate your business model and ideas through marketing. Tools like Sendinblue allow you to create powerful nurture campaigns for your leads, while Mailgun lets you deliver transactional emails seamlessly if your startup is SaaS-focused.
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A Step-by-Step Guide to Choosing Between Mailgun and Sendinblue
Step 1: Analyze Your Goals
- Are you prioritizing bulk promotional campaigns? Go for Sendinblue.
- Need highly reliable transactional emails or API-driven solutions? Mailgun is your best ally.
Step 2: Establish Technical Capabilities
- Non-tech startups can leverage Sendinblue’s plug-and-play capabilities without a hassle.
- SaaS ventures with a technical team will find Mailgun’s API flexibility ideal.
Step 3: Evaluate Budget
Sendinblue’s pricing is unbeatable for startups managing smaller scale campaigns. However, Mailgun offers immense value for businesses handling larger transactional operations.
Common Mistakes to Avoid
- Using the Wrong Tool: Many startups fail to optimize their email strategy because they choose software based on popularity instead of their specific requirements.
- Ignoring Backend Features: Features like spam compliance, deliverability monitoring, and API customizations should not be overlooked.
- Skipping Lead Nurturing: Sendinblue's automation templates can save time while building trust with potential customers. Don't wait until after product launch to start marketing.
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The Final Word: Which Tool Fits YOU?
For holistic marketing campaigns, visual automation, and CRM features, Sendinblue is your go-to platform. It empowers startups to scale their email marketing efforts while building strong customer relationships.
For startups prioritizing reliable deliverability and developer-focused integrations, Mailgun is unmatched. Its powerful APIs and deliverability solutions make it ideal for technical and transactional solutions.
No matter your choice, integrating these tools into your strategy will help your startup validate ideas, grow your audience, and scale efficiently in 2026.
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Step into the future of email marketing automation today, your startup deserves it!
FAQ on Mailgun vs. Sendinblue: The Best Tools for Email Marketing Automation in 2026
1. What are the core differences between Mailgun and Sendinblue?
Mailgun is ideal for businesses needing reliable deliverability and developer-focused API integrations, while Sendinblue (now Brevo) excels in comprehensive marketing features like CRM and automation. Learn more about Mailgun | Explore Sendinblue
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3. Which tool is best for startups on a tight budget?
Sendinblue (Brevo) is better for startups with tight budgets, offering extensive features at just $25/month for 20,000 emails, while Mailgun’s pricing starts at $35/month for 50,000 emails. Learn more about Sendinblue pricing
4. Which platform is better for email deliverability?
Mailgun is recognized for its industry-leading email deliverability, ensuring emails bypass spam filters effectively. Visit Mailgun’s official page
5. How does Sendinblue stand out in marketing automation?
Sendinblue shines with its easy-to-use drag-and-drop automation workflows, perfect for campaigns such as welcome emails, abandoned cart notifications, and more. Read about Sendinblue features
6. Which tool is easier to use for non-technical teams?
Sendinblue offers a user-friendly interface that doesn’t require technical expertise, perfect for non-technical startups. Explore Sendinblue’s ease of use
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8. What’s the best tool for SaaS startups?
SaaS startups benefit from Mailgun’s highly customizable APIs and transactional email support, making it a solid choice for app-focused use cases. Learn more about Mailgun for developers
9. Which tool is better for businesses needing an all-in-one marketing suite?
Sendinblue is better suited for startups seeking an all-in-one tool that integrates email marketing, SMS campaigns, CRM, and Facebook Ads. Explore Brevo’s all-in-one solution
10. What mistakes should startups avoid when choosing an email marketing tool?
Startups should avoid choosing software based on popularity instead of business-specific needs, neglecting deliverability features, and delaying lead nurturing campaigns. Read about common mistakes in email marketing
About the Author
Violetta Bonenkamp, also known as MeanCEO, is an experienced startup founder with an impressive educational background including an MBA and four other higher education degrees. She has over 20 years of work experience across multiple countries, including 5 years as a solopreneur and serial entrepreneur. Throughout her startup experience she has applied for multiple startup grants at the EU level, in the Netherlands and Malta, and her startups received quite a few of those. She’s been living, studying and working in many countries around the globe and her extensive multicultural experience has influenced her immensely.
Violetta is a true multiple specialist who has built expertise in Linguistics, Education, Business Management, Blockchain, Entrepreneurship, Intellectual Property, Game Design, AI, SEO, Digital Marketing, cyber security and zero code automations. Her extensive educational journey includes a Master of Arts in Linguistics and Education, an Advanced Master in Linguistics from Belgium (2006-2007), an MBA from Blekinge Institute of Technology in Sweden (2006-2008), and an Erasmus Mundus joint program European Master of Higher Education from universities in Norway, Finland, and Portugal (2009).
She is the founder of Fe/male Switch, a startup game that encourages women to enter STEM fields, and also leads CADChain, and multiple other projects like the Directory of 1,000 Startup Cities with a proprietary MeanCEO Index that ranks cities for female entrepreneurs. Violetta created the "gamepreneurship" methodology, which forms the scientific basis of her startup game. She also builds a lot of SEO tools for startups. Her achievements include being named one of the top 100 women in Europe by EU Startups in 2022 and being nominated for Impact Person of the year at the Dutch Blockchain Week. She is an author with Sifted and a speaker at different Universities. Recently she published a book on Startup Idea Validation the right way: from zero to first customers and beyond and launched a Directory of 1,500+ websites for startups to list themselves in order to gain traction and build backlinks.
Violetta Bonenkamp's expertise in CAD sector, IP protection and blockchain
Violetta Bonenkamp is recognized as a multidisciplinary expert with significant achievements in the CAD sector, intellectual property (IP) protection, and blockchain technology.
CAD Sector:
- Violetta is the CEO and co-founder of CADChain, a deep tech startup focused on developing IP management software specifically for CAD (Computer-Aided Design) data. CADChain addresses the lack of industry standards for CAD data protection and sharing, using innovative technology to secure and manage design data.
- She has led the company since its inception in 2018, overseeing R&D, PR, and business development, and driving the creation of products for platforms such as Autodesk Inventor, Blender, and SolidWorks.
- Her leadership has been instrumental in scaling CADChain from a small team to a significant player in the deeptech space, with a diverse, international team.
IP Protection:
- Violetta has built deep expertise in intellectual property, combining academic training with practical startup experience. She has taken specialized courses in IP from institutions like WIPO and the EU IPO.
- She is known for sharing actionable strategies for startup IP protection, leveraging both legal and technological approaches, and has published guides and content on this topic for the entrepreneurial community.
- Her work at CADChain directly addresses the need for robust IP protection in the engineering and design industries, integrating cybersecurity and compliance measures to safeguard digital assets.
Blockchain:
- Violetta’s entry into the blockchain sector began with the founding of CADChain, which uses blockchain as a core technology for securing and managing CAD data.
- She holds several certifications in blockchain and has participated in major hackathons and policy forums, such as the OECD Global Blockchain Policy Forum.
- Her expertise extends to applying blockchain for IP management, ensuring data integrity, traceability, and secure sharing in the CAD industry.
For the past several years Violetta has been living between the Netherlands and Malta, while also regularly traveling to different destinations around the globe, usually due to her entrepreneurial activities. This has led her to start writing about different locations and amenities from the POV of an entrepreneur. Here’s her recent article about best hotels in Italy to work from.
About the Publication
Fe/male Switch is an innovative startup platform designed to empower women entrepreneurs through an immersive, game-like experience. Founded in 2020 during the pandemic "without any funding and without any code," this non-profit initiative has evolved into a comprehensive educational tool for aspiring female entrepreneurs.The platform was co-founded by Violetta Shishkina-Bonenkamp, who serves as CEO and one of the lead authors of the Startup News branch. The Fe/male Switch team is located in several countries, including the Netherlands and Malta.
Mission and Purpose
Fe/male Switch Foundation was created to address the gender gap in the tech and entrepreneurship space. The platform aims to skill-up future female tech leaders and empower them to create resilient and innovative tech startups through what they call "gamepreneurship". By putting players in a virtual startup village where they must survive and thrive, the startup game allows women to test their entrepreneurial abilities without financial risk.
Key Features
The platform offers a unique blend of news, resources,learning, networking, and practical application within a supportive, female-focused environment:
- Skill Lab: Micro-modules covering essential startup skills
- Virtual Startup Building: Create or join startups and tackle real-world challenges
- AI Co-founder (PlayPal): Guides users through the startup process
- SANDBOX: A testing environment for idea validation before launch
- Wellness Integration: Virtual activities to balance work and self-care
- Marketplace: Buy or sell expert sessions and tutorials
Impact and Growth
Since its inception, Fe/male Switch has shown impressive growth:
- 3,000+ female entrepreneurs in the community
- 100+ startup tools built
- 5,000+ pieces of articles and news written
Partnerships
Fe/male Switch has formed strategic partnerships to enhance its offerings. In January 2022, it teamed up with global website builder Tilda to provide free access to website building tools and mentorship services for Fe/male Switch participants.
Recognition
Fe/male Switch has received media attention for its innovative approach to closing the gender gap in tech entrepreneurship. The platform has been featured in various publications highlighting its unique "play to learn and earn" model.
