Email marketing can be a compelling tool to use to reach your customers and promote your business. But making attractive, responsive HTML emails that appeal to subscribers can be difficult. In this case, HTML email builders come in handy.

You don’t need to know how to code because these tools help you make professional emails. These tools provide you with intuitive drag-and-drop builders, templates, image libraries, and the opportunity to preview your emails across various devices. Emails made with the right builder will show correctly on computer and phone screens.

This guide goes over the main points to keep in mind when selecting an HTML email builder. We’ve put together a comparison of the top 5 responsive email builders in 2025 so you can choose the one that works best for you. Most often an email builder is provided as a part of a full-fledged email service, so we’ll cover the general functionality too.

How to Choose the Best Responsive Email Builder

Here are the key factors to evaluate when choosing an email HTML builder for your business:

Easy-to-Use Visual Editor

Seek a drag-and-drop editor or a WYSIWYG builder that will make it possible to design emails in a visual mode without touching the code. It should be easy to use with ready-made blocks and templates.

Mobile Responsiveness

Make sure the email builder HTML creates mobile-responsive emails. It should have a mobile preview feature and allow checking emails on both mobile and desktop screens.

Design Flexibility

You need sufficient design customization options to create branded, engaging emails. Evaluate available templates, color schemes, fonts, images, and the ability to add your own styles.

Email Delivery & Analytics

The email builder should easily integrate with your ESP for sending campaigns and provide detailed analytics like opens, clicks, and unsubscribes.

Pricing

While an email builder is a key asset, it’s nothing without good email transport. Look at the ESP’s plans and decide which one fits the number of monthly emails you need to send. Check as well if the key features you need can fit into your budget.

Support & Ease of Use

Explore the online help center, join the community forums, and contact customer support to find out how much support you will get. You should also see if the tool is simple to figure out.

Top 5 Responsive Email Builders Compared

Using the criteria listed above, we picked the top 5 responsive HTML email builders and editors for 2025:

• UniOne – All-in-one Transactional & Marketing Email Platform
• Beefree – Free Responsive Email Template Builder
• Postcards – Intuitive Drag & Drop Newsletter Builder
• MailStyler – Email Editor for Stunning Newsletters
• Mailmodo – Interactive Email Creator & Sending Tool

#1. UniOne – Versatile Email API Platform with Deliverability Focus

UniOne is an email API platform built for both developers and marketers to manage transactional and marketing emails. It combines a drag-and-drop HTML builder for email and a code editor with top-tier deliverability.

With real-time analytics, high inbox placement, and a robust email infrastructure, UniOne is great for mission-critical communications. Additionally, UniOne provides GDPR compliance, dedicated IPs, and advanced security as standard features.

The HTML editor allows flexible styling, while 200+ ready-made templates speed up designing. For developers, UniOne provides SDKs in Java, Node.js, PHP, Ruby, and Python for integrating the API with existing apps.

Key Features

? Drag and drop + HTML email builders

? High deliverability and inboxing

? Real-time analytics with event webhooks

? Advanced security and compliance

? Transactional and bulk email APIs

? DKIM, SPF, DMARC set up

? Free sending up to 6K emails/month

Pricing

? Free – Up to 6K emails/month

? Growth – $25/month for 50K emails

? Business – Custom pricing

Overall, UniOne is the preferred platform for businesses that want deliverability assurance along with flexible email functionality.

#2. Beefree – Intuitive Drag and Drop Email Template Builder

Beefree is a user-friendly HTML email template builder made for non-technical users. It provides a drag-and-drop editor to create responsive templates easily.

You get access to hundreds of free email templates across niches like marketing, ecommerce, etc. Beefree also offers lots of customization options – add images, embed videos, and choose fonts and colors.

Once the email template is ready, you can export the HTML to any email service like MailChimp, SendGrid, etc. The editor lets you write HTML code as well.

Key Features

? Drag and drop email template builder

? Hundreds of free ready templates

? Custom fonts, colors, images, and videos

? Mobile-responsive email designs

? Export HTML code for any ESP

Pricing

? Free – Limited features

? Pro – $29/month

For solopreneurs, small businesses, and bootstrapped startups looking for an affordable but good HTML email maker, Beefree is worth considering.

#3. Postcards – Easy-to-Use Newsletter Builder

Postcards provides a simplified drag-and-drop email template creator focused on newsletters. It is easy to use for non-designers, allowing anyone to build beautiful emails in no time.

Just pick one of the professionally designed newsletter layouts and plug in your content. Customize fonts and images further to match your branding. The email tester allows users to preview the designs on both desktop and mobile devices.

Finally, integrate Postcards with your ESP like MailChimp, Hubspot, SendinBlue, etc., with one-click export to start sending campaigns. It takes away the complexity of designing responsive templates.

Key Features

? Drag and drop newsletter builder

? Mobile-responsive email templates

? Email tester for desktop & mobile

? 900+ Google Fonts integration

? One-click export to major ESPs

Pricing

? Free – 5 exports/month

? Plus – $24/month for 20 exports

For newsletter-focused email marketing, Postcards provides an intuitive building and exporting option to create great-looking, mobile-ready emails.

#4. MailStyler – Email Editor for Stunning Newsletters

MailStyler is a downloadable Windows application for crafting beautiful, responsive newsletter emails without coding. It provides an intuitive what-you-see-is-what-you-get HTML editor.

You get access to dozens of pre-made email templates and blocks to simply drag, drop, and edit visually. Easily customize fonts, colors, content blocks, images, videos, buttons, etc.

Finally, export the HTML file or send test emails before integrating with your email service provider to send the bulk campaign. It also lets you bring in your custom HTML if needed.

Key Features

? Visual email template editor

? Drag and drop newsletter designer

? Custom fonts, images, blocks

? Email tester built-in

? Export HTML file

Pricing

? Free Trial – 5 days

? Solo – $99/year

?Team – 199/year

For Windows users who want to create beautiful email newsletters, MailStyler provides a downloadable editor with pre-made templates.

#5. Mailmodo – Interactive Email Building & Sending

Mailmodo offers everything you need for email marketing, from building to sending and tracking interactive emails. It’s easy to build AMP and HTML emails with 200+ templates and 100+ blocks using its drag-and-drop editor.

You’ll have 20+ interactive modules available, including surveys, galleries, and spin-the-wheel. In addition, you can use built-in analytics to improve your campaigns and automation to act on audience engagement.

Finally, Mailmodo integrates with CRMs and email services to manage subscriber data and send emails. So you get everything – email design, delivery and analytics in one place.

Key Features

? Drag and drop interactive email builder

? 200+ templates and 100+ content blocks

? 20+ interactive email modules

? Built-in analytics and automation

? CRM and email integration

Pricing

? Starter – $49/month – 5K subscribers

?Professional – $99/month – 40K subscribers

For an integrated email marketing and analytics platform, Mailmodo is a worthy pick for serious email marketers.

Key Takeaways – Choosing the Best Email Builder

• Be sure to look at how easy the builder is to use, how well it displays on mobile devices, how much flexibility it offers, its deliverability, and the cost before you choose.
• With UniOne and Mailmodo, you go beyond just creating emails and also get top deliverability and analytics in one package.
• Beefree and Postcards make it easy for anyone to create emails using drag-and-drop interfaces.
• MailStyler offers a downloadable email editor, while Stripo provides design services.
• Overall, the best email builder will be the one that aligns with your specific business needs.

A good email marketing strategy is dependent on attractive, visually pleasing newsletters and promotions. The right HTML email creator tool can make the whole process easier for you, leaving you to concentrate on how to engage your subscribers.

Check the comparative analysis and assess the email template builders and compare them based on the vital requirements such as budget, target audience, features required, etc. This will enable you to choose the best fit to develop high-converting emails that subscribers will love.

Therefore, look at the various options, enjoy free trials and select a solution that makes it easy to design emails without biting into your resources.