Top 10 Open Source Alternatives to Seventh Sense in 2025

As marketing professionals seek robust solutions for email marketing optimization, open-source alternatives to Seventh Sense have gained traction. The following list explores the top 10 open-source email marketing tools in 2025, comparing their key features and capabilities.

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1. Mautic

Description: Mautic is a comprehensive open-source marketing automation platform offering a robust suite of features.
Key Features:
Email Marketing: Personalized email campaigns created easily with a drag-and-drop editor.
Segmentation: Advanced audience segmentation based on behavior, preferences, and demographics.
Automation Workflows: Build customer journeys with automated workflows.
Lead Management: Tools for capturing and nurturing leads from various sources.
Integration: Compatible with many CMS, CRMs, and social media platforms.
Learn more about Mautic

2. Mailtrain

Description: Mailtrain is an intuitive open-source email marketing tool designed for creating and managing newsletters.
Key Features:
Email Editor: Supports a drag-and-drop editor for designing visually appealing emails.
Contact Segmentation: Segment subscribers allowing targeted campaigns.
Campaign Tracking: Comprehensive tracking of email campaign metrics.
Subscription Management: Effective management of subscribers and their preferences.
Self-Hosted: Provides flexibility for integrations and customization due to being self-hosted.

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3. OpenEMM

Description: OpenEMM is a free, web-based enterprise application for email and marketing automation.
Key Features:
Email Creation and Sending: A comprehensive toolset for email creation and dispatch.
Scheduling: Schedule emails for specific future dates and events.
Lead Management: Efficient organization and nurturing of leads.
Multi-Language Support: Supports a multi-language interface.
Automation: Facilitates automation for repetitive tasks.

4. List Messenger

Description: List Messenger is a free open-source email marketing solution catering to a variety of needs.
Key Features:
Open Source: Completely free and open-source.
Email Marketing: Functionalities for seamless email creation and marketing.
Part of Top 7: Acknowledged among the top 7 free open-source tools.

5. phpList

Description: phpList is renowned for its capabilities in email marketing, offering an open-source solution for various email marketing needs.
Key Features:
Open Source: Available for free as an open-source tool.
Email Marketing: Provides robust functionalities for creating and sending email campaigns.
Part of Top 7: Recognized among the top 7 free open-source email tools.

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6. GNU Mailman

Description: This open-source email marketing software is known for its functionalities and ease of use.
Key Features:
Open Source: Available for free and entirely open-source.
Email Marketing: Comprehensive tools for email campaign management.
Part of Top 7: Listed as a top free and open-source tool in its category.

7. Dittofeed

Description: Dittofeed is an open-source marketing platform positioned as an alternative to tools like Customer.io and Braze.
Key Features:
Open Source: Licensed under MIT, making it freely accessible.
Marketing Platform: Provides functionalities akin to Customer.io, Braze, and Klaviyo.

8. Mailjet (Open Source Plan)

Description: Mailjet offers a free open-source plan that encompasses several key features of its commercial offering.
Key Features:
Free Plan: The open-source plan includes major features and up to 6,000 emails per month.
Unlimited Contacts: Allows storing an unlimited number of contacts.
Delivery and Analytics: Includes a dashboard for monitoring delivery and analytics.
API Access: Offers API access for seamless integration.
Learn more about Mailjet

9. AcyMailing (Open Source Plan)

Description: AcyMailing offers a free plan for newsletter and email marketing, perfect for smaller teams and individuals.
Key Features:
Open Source: The free plan includes key email marketing functionalities.
Email Sending: Unlimited email sending capabilities on the free tier.
Limited Statistics: Advanced statistics not included in the free plan.

10. Mustache

Description: Mustache is a completely free and open-source email marketing platform suitable for various marketing endeavors.
Key Features:
Free: The platform is 100% free for users.
Open Source: Fully open-source, allowing extensive customization and utility.

These open-source tools provide versatile and cost-effective alternatives for email marketing, designed to help marketing professionals optimize their campaigns efficiently.

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FAQ

1. What is Mautic?

Mautic is a powerful, open-source marketing automation platform that provides a wide array of features for email marketing, lead management, and campaign automation. Learn more about Mautic

2. What does Mailtrain offer for email marketing?

Mailtrain is an open-source email marketing software designed to help you create and send newsletters with a drag-and-drop editor, segment contacts, and track campaign performance.

3. How does OpenEMM assist with marketing automation?

OpenEMM is a free, open-source, web-based enterprise application for email and marketing automation, offering comprehensive email creation and scheduling functionalities.

4. What features does List Messenger provide?

List Messenger is a free, open-source email marketing software that includes features to create and manage email campaigns effectively.

5. What is phpList known for?

phpList is a free, open-source email marketing software solution designed to help users create and send marketing emails efficiently.

6. What is GNU Mailman used for?

GNU Mailman is an open-source software solution designed for email marketing, providing tools to create, send, and manage emails.

7. What is Dittofeed, and what does it offer?

Dittofeed is an open-source marketing platform developed as an alternative to tools like Customer.io, Braze, and Klaviyo, offering similar features and functionalities.

8. Does Mailjet offer an open-source plan?

Yes, Mailjet offers a free open-source plan that includes major features like unlimited contact storage, email delivery, and analytics. Discover Mailjet

9. What is AcyMailing, and what does its free plan include?

AcyMailing is a newsletter and email marketing plugin that offers a free open-source plan, allowing users to send unlimited emails.

10. What is Mustache, and what does it provide?

Mustache is a free and open-source email marketing platform designed to help users create and manage email campaigns effectively.

References

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. 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.

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 the 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.

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.