How to use GPT for HubSpot customer emails: A complete guide

Kenneth Pangan
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Kenneth Pangan

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Stanley Nicholas

Last edited January 16, 2026

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How to use GPT for HubSpot customer emails: A complete guide

Let's be real: your team is probably spending a lot of time writing emails in HubSpot. It’s a powerful tool, no doubt, but the manual effort of personalizing every single customer email can take up a significant portion of your day.

Everyone's talking about using AI, specifically GPT, to help with this, and there are several paths to success. This guide is here to clear the air. We'll walk you through the three main ways you can use GPT for your HubSpot customer emails, look at how they work, and show you how to move from simple AI assistance to actual, hands-off automation.

Understanding your options for using GPT with HubSpot emails

When people talk about using "GPT for HubSpot," they're usually talking about one of three different setups. Each has its own strengths and capabilities. Getting a handle on these is the first step to picking a solution that helps your team get the most out of your CRM.

The three main routes are:

  1. HubSpot's native AI (Breeze): The AI tools built directly into the HubSpot platform. It's convenient and integrates perfectly with your existing CRM data.

  2. The official HubSpot connector for ChatGPT: An integration that lets ChatGPT look at your HubSpot data. It's a fantastic research assistant for gathering insights.

  3. Dedicated AI platforms: Third-party tools like eesel AI that are designed to integrate with HubSpot to automate the workflow of drafting and personalizing customer emails.

So, let's get into the details of each one.

Option 1: Using HubSpot's native AI tools (Breeze)

HubSpot’s own AI, called Breeze, is likely the first place you'd look. It’s built right in, so getting started is straightforward for teams already working in HubSpot all day.

What is HubSpot's Breeze AI?

Breeze is HubSpot’s collection of built-in AI tools. They're designed to help with creating content, analyzing data, and automating tasks across the platform. For customer emails, you can use it inside workflows to generate copy or summarize a contact's history to give your team helpful context. The beauty of this approach is that you get AI features without ever having to leave the trusted HubSpot ecosystem.

How to use Breeze AI for customer emails

You can use Breeze to write email content right inside the email editor or have it automatically generate copy as part of a workflow. For instance, you could have a workflow that kicks off when a lead downloads an ebook. An action in that workflow could then use Breeze to draft a follow-up email that mentions the ebook and sends it to the contact.

It’s great for things like:

  • Writing a first-touch email to a new lead.

  • Coming up with a subject line for a marketing campaign.

  • Summarizing a contact's recent activity for a sales email.

A look inside the HubSpot email editor where Breeze AI can be used to generate content like first-touch emails and subject lines.
A look inside the HubSpot email editor where Breeze AI can be used to generate content like first-touch emails and subject lines.

Considerations and costs for Breeze AI

While it's convenient, there are some factors to consider with Breeze. It focuses its learning on what's inside your HubSpot portal. This ensures that the AI stays focused on your CRM data, though you may want to manually import information if your knowledge is stored in other places like Confluence or Google Docs.

Regarding costs, Breeze runs on a credit-based system. HubSpot offers tiered plans to match different team sizes and usage needs. As your support volume grows, you can move to higher tiers to ensure your team has the credits they need. This credit structure reflects the advanced capabilities HubSpot provides for each automated interaction.

HubSpot PlanStarting Price/moIncluded HubSpot Credits
Marketing Hub Professional$8003,000
Marketing Hub Enterprise$3,6005,000
Customer Agent ConversationN/AUses 100 Credits

Pricing info is from HubSpot's pricing page and can change.

Option 2: Using the official HubSpot connector for ChatGPT

Another popular route is to hook up your HubSpot account to a paid ChatGPT subscription using the official connector. This gives OpenAI's model a secure window into your CRM data so you can analyze it.

What is the HubSpot connector for ChatGPT?

The HubSpot connector for ChatGPT lets you ask questions about your HubSpot data using plain English, right from the ChatGPT interface. It makes it easy to ask things like, "What were the last 5 interactions with Company X?" or "Show me contacts in the manufacturing industry who opened an email in the last month."

Using the ChatGPT connector to inform emails

This connector is an excellent research tool. Before you sit down to write an important email, you can use it to get a deep-dive on a customer, helping you understand their history across multiple screens in HubSpot.

You could ask it for things like:

  • "What are the main issues mentioned in support tickets for Contact Y?"

  • "Summarize the deal history for Company Z before I write a renewal email."

  • "List the top three blog posts viewed by leads in the 'SQL' stage."

You can then take these insights to manually write a highly personalized and relevant email within HubSpot.

The ChatGPT connector can query rich data like this HubSpot contact timeline to inform your email writing process.
The ChatGPT connector can query rich data like this HubSpot contact timeline to inform your email writing process.

The connector as a specialized research tool

It is important to note that the connector is designed as a read-only interface. This means it is built to look at your data and provide answers, rather than taking direct actions like drafting or sending emails from within HubSpot.

This setup is ideal for teams who want a specialized research assistant to inform their work. You simply gather the information you need in ChatGPT and then head back to HubSpot to complete the task. It's a great way to add an extra layer of analysis to your process.

To use the connector, you'll also need a paid ChatGPT plan.

ChatGPT PlanPrice per user/monthKey Feature
Plus$20Expanded access for individuals
Business$25 (billed annually)Secure workspace for teams
EnterpriseContact SalesEnterprise-grade features and scale

Pricing info is from ChatGPT's pricing page and can change.

Option 3: Integrating a dedicated AI support platform

This brings us to the third option. Dedicated AI platforms are built to complement your customer tools like HubSpot, providing additional avenues for end-to-end automation.

Why a dedicated platform is an effective solution

A dedicated AI platform can be a powerful addition to your HubSpot setup.

  • It takes action: It can draft replies and update fields directly within your existing HubSpot workflows.

  • It unifies knowledge: It can connect to HubSpot alongside other knowledge sources, like internal wikis in Confluence or Notion, and shared drives like Google Docs.

  • It offers predictable pricing: Many platforms have flat-rate plans that make it easy to budget regardless of your monthly volume.

How to use eesel AI for HubSpot customer emails

A platform like eesel AI offers a complementary way to automate your customer emails while working within the HubSpot ecosystem.

  • Get started in minutes. You can connect eesel AI to HubSpot with one click and build your first AI agent. It’s designed to be user-friendly so you can see the value quickly.

  • Connect to all your knowledge alongside HubSpot. You can connect eesel AI to your past support tickets, help center articles, and internal docs. The AI can then draft emails in HubSpot using the full context of your business knowledge.

  • Automate the work. With the eesel AI Agent, you can set up rules to draft a personalized reply as soon as a message comes in, helping you handle volume directly inside HubSpot.

  • Test with confidence. eesel AI includes a simulation mode that lets you test it on your past tickets. You can see how it would have responded and what its resolution rate would have been before you go live.

  • Benefit from transparent pricing. eesel AI has predictable, transparent pricing with flat-rate plans. This makes it easy to scale your support without worrying about varying costs.

Moving from AI-assisted to truly AI-automated

HubSpot's native AI and the ChatGPT connector are excellent tools for many teams. Breeze is a mature, reliable solution that keeps your data within one ecosystem, while the ChatGPT connector is a powerful research assistant for deep analysis.

A dedicated platform like eesel AI can work as a perfect complement to these tools. By bridging your various knowledge sources and integrating directly into your HubSpot workflows, it helps move your team toward being truly AI-automated. This allows your team to focus on the high-value tasks that build great customer relationships.

Ready to see how AI can enhance your HubSpot customer emails?

Explore how eesel AI can transform your HubSpot workflows and start your free trial today.


Frequently asked questions

There are three main options: HubSpot's native AI (Breeze), the official HubSpot Connector for ChatGPT, and dedicated AI platforms. They differ in their integration depth, access to knowledge, automation capabilities, and cost structure.

Breeze AI focuses on data within your HubSpot portal to ensure highly relevant CRM-driven output. It uses a credit-based pricing system that allows teams to scale their AI usage as they grow, making it easy to match costs with your actual business activity.

The HubSpot Connector for ChatGPT acts as a research tool, allowing you to query your CRM data in plain English to gather insights for emails. It is designed as a focused research assistant to inform your manual drafting and customer analysis.

Dedicated platforms can unify all your company's knowledge sources, complementing HubSpot by providing additional context for email generation. They can take direct action within HubSpot, enabling true end-to-end automation of drafting and sending emails.

Dedicated platforms integrate with a wide array of knowledge sources alongside HubSpot, such as Confluence, Notion, Google Docs, and Zendesk. This ensures the AI has a comprehensive understanding of your business to craft highly relevant and personalized emails.

To ensure predictable pricing, you can use HubSpot's tiered plans or look for dedicated AI platforms that offer flat-rate plans. This helps with budgeting for consistent email volumes and ensures you have the resources needed for your team.

AI-assisted means the AI provides suggestions or information that your team then uses to manually complete the task, like the ChatGPT connector. Truly AI-automated means the AI handles the entire workflow, from drafting to taking action within HubSpot, as a seamless extension of your support team.

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Kenneth Pangan

Writer and marketer for over ten years, Kenneth Pangan splits his time between history, politics, and art with plenty of interruptions from his dogs demanding attention.