Top 10 Free Email Marketing Software to Grow Your Business

Email marketing remains one of the most powerful channels for business growth, delivering an impressive ROI of $42 for every dollar spent. Whether you're a startup founder, small business owner, or marketing professional, finding the right free email marketing software can transform your customer relationships and drive revenue growth. 

In this comprehensive guide, we'll explore the 10 best free email marketing software options available in 2025, helping you choose the perfect free email software to kickstart or scale your email marketing strategy without breaking the bank. These free email marketing tools offer robust features that rival premium platforms, making professional email marketing accessible to businesses of all sizes.

Quick Overview: Top 10 Free Email Marketing Software

This comparison of free email software will help you quickly identify which free email marketing software best suits your needs.

1. Mailmodo

Mailmodo is an AI-powered email marketing software that revolutionizes how you create, automate, and optimize campaigns effortlessly. From planning strategy to writing copy and building journeys, Mailmodo's AI Agents handle it all, with no technical expertise needed. It's the fastest way to send smart, interactive, and high-performing emails.

For businesses looking to boost engagement and conversion rates with cutting-edge AI technology, Mailmodo offers a unique competitive advantage among free email software options. The platform combines powerful AI assistance with interactive AMP email technology, making it ideal for companies wanting to stand out in crowded inboxes and accelerate their email marketing success with minimal manual effort.

Key Features

• AI Email Assistant: Mailmodo's AI Agents. Plan your emails, journeys, and goals with no manual effort required.

• AI-Powered Email Builder: Generate complete email layouts or remix existing ones, and instantly change fonts, colors, or content using AI commands.

• Drag-and-Drop Editor: Use the drag-and-drop and WYSIWYG editor to customize emails exactly how you want. Preview them live to ensure design consistency and quality before sending.

• AMP & Interactive Emails: Create dynamic, app-like experiences directly in emails from forms and polls to surveys and product showcases.

• AI Audience Segmentation Made Simple: Mailmodo's AI will create accurate segments based on your data, ready for personalization.

• Smart Email Automation: Set up entire customer journeys without the overwhelm. Get AI-suggested workflows, pre-filled templates, and triggers you can edit anytime.

• AI Advanced Analytics & Insights: Get AI-driven reports that translate complex metrics into actionable insights. See what worked, what didn’t, and receive clear recommendations to optimize your next send.

Pros

• AI Agents automate strategy, copywriting, and campaign creation, eliminating hours of manual work.

• Interactive AMP email technology drives significantly higher engagement rates than traditional emails.

• AI-powered segmentation and journey building make advanced marketing accessible to everyone.

Cons

• Slight learning curve when setting up AI agents for the first time.

• Advanced automation requires higher-tier plans.

2.​‍​‌‍​‍‌​‍​‌‍​‍‌ MailerLite

MailerLite has been known to be a very easy-to-use and at the same time powerful free email marketing tool that does not compromise the features. This free email marketing tool, which is a bit misleading in its name, actually offers the functionality of a large company with a very simple interface that is equally liked by the users of the platform, who are new and the ones that are experienced.

The platform is very bright with its very open free plan that even includes features that are considered to be of a higher level, such as automation workflows, landing pages, and the builders of websites. MailerLite is always among the top performers in email deliverability tests when compared to other free email software, and thus, your emails that are carefully put together are the ones that will be delivered to your subscribers, i.e., their inboxes.

Key Features

• Dynamic Content Blocks: Content blocks for articles, videos, products, RSS feeds, and events are automatically generated.

• Countdown Timers: Use dynamic countdown elements to create urgency.

• Automation Builder: 15 plug-and-play workflows and limitless custom automation.

• Landing Page & Website Builder: Build conversion-focused pages without any other tool.

• Advanced Segmentation: Create persistent and one-time segments with aggregate statistics.

• E-commerce Integration: Fully integrated connections to Shopify and WooCommerce.

• A/B Testing: Try out different subject lines, content, and sending times.

• Multi-Trigger Automation: Use multiple conditions to create complex workflows.

Pros

• Extremely generous free plan with 12,000 monthly email sends.

• The intuitive Notion-style editor makes campaign creation fast and fun.

• Excellent automation and segmentation are available without the need for a paid account.

Cons

• Lack of pre-designed email templates in the free plan (although content blocks help).

• Emails cannot be sent from Gmail addresses.

• Certain advanced customizations require knowledge of ​‍​‌‍​‍‌​‍​‌‍​‍‌HTML.

3.​‍​‌‍​‍‌​‍​‌‍​‍‌ Brevo (previously Sendinblue)

Brevo is no longer just an email service. It has turned into a full-fledged free email marketing software with a marketing and sales suite. The name change from Sendinblue was made to indicate that this free email marketing tool now offers a single solution for email, SMS, WhatsApp, chat, CRM, and marketing automation.

What Brevo excels at most among free email software is its innovative free plan design: instead of placing a limit on the number of emails sent per month, it simply limits emails per day to 300. This strategy is excellent for companies that have a steady, moderate volume of emails throughout the month and are able to send their newsletters or regular updates to a loyal audience using free email marketing tools.

Key Features

• Multi-Channel Campaigns: Email, SMS, WhatsApp, web push, and Facebook ads.

• Full-Featured CRM: Track leads, manage deals, and monitor customer interactions.

• Marketing Automation: 20+ pre-built, goal-oriented workflows.

• Drag-and-Drop Editor: Build responsive emails quickly with 40+ templates.

• AI Subject Line Generator: Optimize open rates with AI-powered suggestions.

• Transactional Email API: Send automated system emails alongside marketing messages.

• Live Chat & Chatbots: Interact with visitors on your site instantly.

Pros

• On the free plan, you can handle up to 100,000 contacts, which is more than any other competitor.

• A real all-in-one platform means no need for multiple subscriptions.

• Automation can be set up very quickly with the help of a pre-built template.

Cons

• You need to be very careful when planning your campaign, as 300 emails daily limits.

• It costs if you want to remove Brevo branding.

• Some users have reported that their deliverability rates have been ​‍​‌‍​‍‌​‍​‌‍​‍‌unstable.

4.​‍​‌‍​‍‌​‍​‌‍​‍‌ Moosend

Moosend combines powerful features typically found in enterprise-level software with small business pricing and is one of the best free email marketing software options in terms of functionality. The particular emphases of this free email marketing tool are deliverability and automation. It keeps a 98% sender reputation score, which is why your campaigns are almost always delivered to the inbox rather than being put in the spam folder.

Small businesses find Moolsend's neat, simple interface very user-friendly as it does not have an unnecessarily complicated structure. A 30-day unlimited trial with this free email software allows you to test all functionalities without any rush, and it is an affordable paid plan that makes it possible for you to scale as your business grows beyond free email marketing tools.

Key Features

• Visual Workflow Builder: Develop complex automation sequences using an intuitive drag-and-drop interface.

• Advanced Segmentation: Engage the users on the basis of their conduct, demography, and custom fields.

• Real-Time Analytics: Keep track of the results of your campaigns with detailed reports and insights.

• AI-Powered Recommendations: Receive suggestions from the system to get optimization done for better results.

• Landing Page Builder: Build the pages that are the main source of sales without any help from the technical department.

• Subscription Forms: Fully customizable signup forms with pop-up and embedded formats.

• E-commerce Tracking: Keep track of the money that comes in and the products that sell.

Pros

• You can send an unlimited number of emails on all paid plans, which start from merely $9/month.

• The faultless user interface temporarily eliminates the need for users to go through the manuals.

• The advanced automation features, which are generally available only in the premium platforms, are here as well.

Cons

• There is no free plan that lasts forever (only a 30-day trial is available).

• The forms have limited customization features.

• The company has fewer connections than the mature ​‍​‌‍​‍‌​‍​‌‍​‍‌competitors.

5. Kit (ConvertKit)

Kit was previously known as ConvertKit, purpose-built for creators: bloggers, podcasters, YouTubers, and digital entrepreneurs wanting to build sustainable businesses with free email marketing tools. This no-cost email marketing software realizes that creators need more than just email marketing; they need the tools to effectively monetize their audience.

With an extremely generous free plan allowing unlimited sends to 10,000 subscribers, Kit gives you a phenomenal runway as a growing creator looking for free email software. The platform is great at helping you sell digital products, premium subscriptions, and courses directly through your email campaigns using this powerful free email marketing tool.

Key Features

• Creator Network: Get discovered by other creators' audiences through recommendations.

• Digital Product Sales: Sell products, subscriptions, and memberships with integrated commerce.

• Visual Automation: Build simple to complex sequences through clear visual workflows.

• Advanced Segmentation: Tag and segment subscribers based on interests and behavior.

• Landing Pages: Beautiful opt-in pages with conversion-focused templates.

• Subscriber Scoring: Automatically identify your most engaged audience members.

• Broadcasting: One-time campaigns to your whole list or at the segment level.

• RSS-to-Email: send new blog posts to subscribers automatically.

Pros

• Unmatched generosity with 10,000 subscribers and unlimited sends for free.

• Built-in commerce features eliminate the need for separate payment processors.

• Clean, distraction-free interface keeps focus on content creation.

Cons

• Rich text editor lacks the advanced design capabilities provided by drag-and-drop builders.

• Free plan limited to one automation sequence.

• Better suited for newsletters rather than complex marketing campaigns.

6. HubSpot

HubSpot's Marketing Hub is the gold standard for businesses looking for an integrated way to handle marketing, sales, and customer service with free email software capabilities. While mainly known as a CRM platform, surprisingly, the free email marketing software that HubSpot offers is pretty robust, which makes it a great option for businesses planning full-scale growth strategies.

The true power in utilizing HubSpot as a free email marketing tool is the unified ecosystem wherein every customer interaction-from a first website visit all the way through purchasing and into support-lives in one system. This affords previously unmatched possibilities for personalization and data-driven decision-making with free email marketing tools.

Key Features

• Smart Lists: Dynamic segmenting that is automatically updated based on contact properties

• Personalization Tokens: Personalize emails using contact data from CRM

• Marketing Automation: Develop sophisticated workflows based on CRM events.

• Lead Scoring: Grade prospects based on behavior and fit.

• A/B Testing: Systematically optimize subject lines and content.

• Form Builder: Design powerful forms that auto-feed your CRM

• Meeting Scheduler: Let prospects book time on your calendar directly

Pros

• Seamless integration of marketing, sales, and service provides a unified view of the customer.

• Free plan includes real CRM functionality above and beyond basic contact management.

• Extensive integration marketplace with 1,000+ connected apps.

Cons

• Extremely steep learning curve due to the complexity of the platform.

• Pricing increases very rapidly when adding users or scaling contacts. 

• Many useful features are locked behind the high-cost Professional and Enterprise tiers.

7.​‍​‌‍​‍‌​‍​‌‍​‍‌ Sender

Sender manages to maintain its position in a market that is becoming more and more restrictive. A free email marketing tool with full access to automation and segmentation, plus 2,500 subscribers and 15,000 monthly emails for free, thus giving small businesses and startups that are growing a remarkable amount of value.

Essentially, this free email software concentrates on providing the basic functionalities of email marketing without overloading the users with unnecessary features. The drag-and-drop editor, while not being the most advanced among free email marketing tools, is functional, and the automation workflows, which are pre-built, assist you in effectively engaging your subscribers from the very first day.

Key Features

• 9 Pre-Built Automation Workflows: For example, webinar promotion, customer win-back, and cart recovery.

• 11 Standard Triggers: Create automations by using the common actions of subscribers.

• Advanced Segmentation: Generate the targeted groups with the help of the e-commerce and engagement data.

• 60+ Email Templates: Acceptable designs that cover the most common use cases.

• E-commerce Features: Product recommendations and purchase tracking.

• SMS Marketing: To be used on multi-channel campaigns, available for paid plans only.

• Newsletter Functionality: Simple broadcast emails for regular updates.

Pros

• Free plan allowances are exceptional enough to make it a practical option for a large number of subscribers.

• There is no requirement for a premium upgrade to have full automation access.

• Incredibly affordable paid plans maintain their value as you grow.

Cons

• The drag-and-drop editor is somewhat outdated when compared to the latest alternatives.

• The quality of the template library varies greatly.

• Limited integrations with non-e-commerce ​‍​‌‍​‍‌​‍​‌‍​‍‌platforms.

8.​‍​‌‍​‍‌​‍​‌‍​‍‌ Omnisend

Omnisend is a free email marketing tool that was specifically designed for e-commerce businesses. As a result, this tool is very effective in every aspect. It recognizes that e-mail marketing is not sufficient for online retailers; they also need tools that are specifically created to increase product sales, to get back abandoned carts, and to elevate the customer lifetime value.

Even though there is a limitation of 250 subscribers for this free email marketing software, the feature-rich offering makes it perfect for new e-commerce ventures testing free email marketing tools. You have more than 20 automation workflows pre-built, which virtually cover all e-commerce scenarios, from welcome series to post-purchase follow-ups.

Key Features

• E-commerce Automation Flows: Flowcharts that use the abandonment of a cart or browse, welcome credentials, and so forth, as the triggers are prepared in advance.

• Smart Segmentation: Segments that are already set up, like frequent visitors, high-value customers, and churn risk.

• Product Recommendation Engine: The products that are shown dynamically are based on both browsing and purchase history.

• Multi-Channel Campaigns: You can email, SMS, and send a push notification.

• Sales Tracking: Be aware of the income brought about by each campaign and automation.

• Signup Forms: Pop-ups, in-built forms, and landing pages that are conversion-optimized.

Pros

• Perfectly coordinated e-commerce focus with features that online stores actually need.

• Great template library with designs that are visually pleasing and attractive.

• Excellent 24/7 customer service by live chat and email is available for all users.

Cons

• The free plan is very limited, with only 250 contacts and 500 monthly sends.

• Price increases rapidly as the number of subscribers grows.

• Non-e-commerce businesses will get little value from this ​‍​‌‍​‍‌​‍​‌‍​‍‌tool.

9.​‍​‌‍​‍‌​‍​‌‍​‍‌ Klaviyo

Klaviyo has been able to distinguish itself from the rest of the free email marketing software as a tool of choice for highly sophisticated e-commerce marketers. What this free email marketing tool tracks is not only what customers have done, but it also predicts what they are likely to do next, hence allowing the initiation of proactive marketing strategies.

Even though Klaviyo can be ranked as one of the most expensive free email software options when you scale up, the investment is worth it for businesses that are really committed to maximizing e-commerce revenue. In fact, the platform's deep integrations with Shopify, WooCommerce, and other platforms facilitate data synchronization that, in turn, fuels hyper-personalized campaigns with free email marketing tools.

Key Features

• Predictive Analytics: Helps with predictions like the most probable next order date, lifetime value, and churn risk.

• Advanced Segmentation: Work mechanisms can be set to make new groups based on both past data and future predicted behaviors.

• Deep E-commerce Integration: Get detailed product and customer information from the stores you are connected to.

• Dynamic Product Recommendations: Allow events to happen automatically to show the most relevant products.

• SMS & Push Notifications: Utilise one platform to manage multi-channel campaigns seamlessly.

Pros

• Predictive analytics at the industry level enables the initiation of proactive marketing strategies.

• Easy installation due to perfect Shopify integration.

• Effective segmentation can result in the production of very targeted and personalized campaigns with high levels of engagement.

Cons

• The platform with the highest costs among those reviewed with prices rising quickly.

• Even though the pricing is at a premium level, the customer support is said to be not very prompt.

• Even on paid plans, there are limited monthly sends, which increases the costs ​‍​‌‍​‍‌​‍​‌‍​‍‌unintentionally.

10.​‍​‌‍​‍‌​‍​‌‍​‍‌ Constant Contact

Constant Contact has been a business's go-to email marketing tool that is free and reliable, and as such, it has been constantly delivering and functioning straightforwardly, thus it has been earning the trust of its users. Although free email software like this one is not very attractive in terms of features, its solid reliability and user-friendliness are what make it a good choice for businesses that are looking for simplicity and trustworthiness.

The main feature of free email marketing software like this is definitely the comprehensive event marketing functionality. If your company is organizing regularly either webinars, workshops, conferences, or community events, then Constant Contact's automatically integrated RSVP management and ticketing will be very helpful to you, as they will take you out of the necessity to use different platforms for events, thus making it quite a versatile tool among the free email marketing tools.

Key Features

• Event Management: Build event landing pages, send invitations, and track RSVPs.

• Ticket Sales: Directly through the platform with integrated payment processing, sell the tickets.

• Social Media Integration: Share content and promote events on Facebook and Instagram.

• Email Automation: Simple welcome series and follow-up, with automated workflows.

• Vast Template Library: Hundreds of professionally designed templates.

• List Segmentation: Contacts grouped by demographics and engagement.

• Reporting & Analytics: Metrics and campaign performance tracking.

• Mobile App: Campaigns management and results tracking anytime, anywhere.

Pros

• Deliverability is at an exceptional level, so that emails always reach inboxes.

• Event marketing features do away with third-party event tools.

• UI that is very intuitive for newcomers, with almost no learning curve.

Cons

• A/B testing on basic plans is only possible for subject lines.

• To access advanced automation, costly higher-tier plans are needed.

• There is no one-click cancellation - you have to call the billing ​‍​‌‍​‍‌​‍​‌‍​‍‌team.

Conclusion

Email marketing remains one of the highest-ROI channels available to businesses, and the abundance of powerful free email marketing software means budget constraints no longer prevent effective campaigns. Remember: the best free email marketing software isn't necessarily the one with the most features or the largest free plan. It's the free email marketing tool you'll actually use consistently to build genuine relationships with your subscribers and grow your business sustainably. Choose free email software that matches your technical skills, business goals, and growth trajectory.

The 10 free email marketing tools reviewed in this guide offer professional-grade capabilities without the premium price tag. Start exploring these free email software options today and transform your email marketing strategy.