HubSpot AI marketing email tool review: Is it the right choice?

Let's be honest, you can't scroll through your marketing feed without tripping over a post about AI. Every major platform seems to have its own built-in assistant now, promising to whip up brilliant copy in seconds. We're all looking for an edge to create content faster without letting the quality slide.

HubSpot, as a leader in the space, has developed a robust set of tools to help marketers meet this challenge. That’s exactly why we’re doing this hands-on look at HubSpot's AI marketing email tool. It's part of their Breeze AI suite, and we’re going to dig into its features, performance, and how its tiered plans work to help you decide how to best utilize it for your team in 2026.

A closer look at the HubSpot AI marketing email tool

The AI features you find in HubSpot's email editor are all part of a larger, sophisticated suite they call "Breeze AI." When you're building an email, you'll see it pop up as the "Copilot" or "AI Assistant."

Its main job is to provide a helpful starting point: helping you draft subject lines, preview text, and email copy so you never have to stare at a blank screen. It's built to help you overcome writer's block and speed up the whole process of getting a campaign out the door.

The whole idea is to give you a capable assistant that lives right inside HubSpot, keeping your workflow centralized. HubSpot says it will help you "boost email opens" and "skillfully rewrite, edit, or adjust the tone of existing copy." It’s designed to feel like a natural, integrated part of your marketing process.

Key features

So, what can you actually do with it? Let's break down the main functions.

Content creation

The biggest draw is efficient content creation. The process is straightforward: you give the AI a prompt, tell it what tone of voice you want (like friendly or professional), and suggest a length.

The tool then generates a draft for your email body, subject line, and preview text, all within the editor. You can also highlight something you’ve already written and ask the AI to rephrase, shorten, or expand on it. It's an excellent feature for making quick edits or finding fresh ways to phrase your messaging.

Performance analysis

Beyond just writing, HubSpot offers a premium feature called "messaging insights," which is currently in beta. This tool is designed to analyze your email’s performance, deliverability, and engagement.

It offers suggestions to make your copy and calls-to-action more effective based on how your past emails have performed. These deeper analytical tools are typically available in HubSpot’s higher-tier plans, providing enterprise-grade insights for growing teams.

Considerations for getting the most out of HubSpot AI

While HubSpot provides a powerful foundation, there are a few things to keep in mind to ensure you get the best results for your specific brand.

Refining content for your brand voice

Because the AI is designed to be versatile, some users find the initial drafts provide a reliable starting point that benefits from a quick human touch. As noted by some users, the drafts are a great foundation but often work best when you spend a few minutes "fine-tuning the voice" to match your specific brand personality.

It's best to think of it as a high-speed assistant. It can give you a solid first draft, and then you can add the unique flair that makes your brand stand out.

Integrating your wider knowledge base

HubSpot's AI is exceptionally powerful when working with data inside its own ecosystem. It’s built to be a centralized hub for your CRM and marketing efforts.

If your team also uses external tools like Confluence, Google Docs, or Slack for documentation, you might find that you want to bring that context into your HubSpot workflow.

This is where a complementary tool like eesel AI can be a great addition. It works alongside your HubSpot setup, connecting to various external information sources to help provide a complete knowledge base for your AI-driven tasks.

Understanding the AI workflow

HubSpot's AI is designed for ease of use and immediate action. You can generate drafts and see how they look in real-time, which is perfect for fast-moving marketing teams.

For teams that want to go even deeper into testing AI responses against historical data, specialized platforms can offer additional layers of simulation. For instance, eesel AI offers a simulation mode that can run alongside your primary tools, helping you refine how AI interacts with your information before it reaches your audience. It's all about choosing the right combination of tools to build total confidence in your automated workflows.

Pricing breakdown

HubSpot offers a variety of tiered plans designed to scale alongside your business growth.

Starter and free options

HubSpot's free tools are a fantastic entry point, offering basic AI content generation to help you get started.

For teams ready to take the next step, the Starter plan (around $20/month) is very accessible. It allows you to remove HubSpot branding and provides a more professional look for your campaigns.

Professional and enterprise tiers

For teams that require advanced AI, A/B testing, and full automation, HubSpot offers Professional and Enterprise plans. These are comprehensive solutions for companies looking to invest in a mature, all-in-one platform.

The Professional plan starts at $800 per month, while the Enterprise plan is designed for larger organizations starting at $3,600 per month. These plans include mandatory onboarding fees ($3,000 for Professional, $7,000 for Enterprise) to ensure your team is set up for long-term success. Some newer AI agents also utilize a credits system, allowing you to scale your AI usage as needed.

Plan	Starting Price (Annual)	Onboarding Fee	Key AI Email Features
Free	$0	None	Basic AI copy generation
Starter	$20/month	None	Removes branding, basic automation
Professional	$800/month	$3,000	A/B testing, dynamic content, full automation
Enterprise	$3,600/month	$7,000	Predictive lead scoring, advanced analytics

[YOUTUBE_VIDEO: https://www.youtube.com/embed/oFfuKZBWh8A]

This tutorial shows how you can set up and send your first marketing email using HubSpot with some help from AI.

Complementing HubSpot with specialized AI tools

While HubSpot provides an incredible all-in-one ecosystem, you can add even more power to your setup by using specialized tools that integrate with your existing workflow.

Connecting all your knowledge sources

Rather than relying on a single platform, you can use eesel AI as a complementary tool that connects to over 100 sources, including Zendesk, Confluence, Google Docs, and Notion. It helps bring all your company's scattered knowledge together, which can then inform your communications or power an internal search bot.

Quick setup for specific needs

While HubSpot's advanced plans offer deep, comprehensive onboarding, eesel AI is a great option for teams that want to add specific AI capabilities quickly. You can connect your helpdesk or documentation with a few clicks and see immediate results. It’s a flexible way to enhance your tech stack without a long implementation period.

Flexibility and predictable growth

Using a tool like eesel AI alongside HubSpot gives you a highly customizable workflow. You can define specific tone-of-voice rules and set up custom actions that bridge multiple apps. This combination allows you to enjoy the reliability of HubSpot while maintaining a flexible and predictable pricing model for your specialized AI needs.

Is the HubSpot AI marketing email tool worth it?

The final call? The HubSpot AI marketing email tool is an impressive and capable choice for teams already working within the HubSpot ecosystem. It offers a convenient, integrated way to speed up your marketing efforts and overcome the blank-page hurdle.

For teams that want a mature, trustworthy platform that can power their entire customer journey, HubSpot is the industry gold standard. It provides the stability and scalability that growing companies need.

By understanding how to refine the AI's output and perhaps adding a complementary tool like eesel AI to bridge external knowledge gaps, you can build a truly world-class marketing engine that is both powerful and context-aware. Hubspot remains a leader for a reason: it's a reliable partner for your business growth in 2026.---