HubSpot Nurture Agent: How to Personalize Automated Emails at Scale

Marketing automation has made it easier to nurture leads at scale, but much of that communication still relies on standardized messaging. Even with audience segmentation, personalization tokens, and automated workflows, contacts with different needs and interests often receive nearly identical emails.

Meanwhile, marketing teams are collecting valuable content about those contacts through their CRM. Job titles, company details, website activity, content engagement, and previous interactions can reveal what matters to each person. The challenge has been turning that content into individualized messaging without manually creating countless email variations.

HubSpot's new Nurture Agent introduces a way to do exactly that.

Powered by Breeze, Nurture Agent uses CRM data and research to personalize automated emails for individual recipients, helping marketers deliver messaging that reflects who their contacts are and what they're interested in.

Let's explore how Nurture Agent works, where it can support your marketing strategy, and what to consider before putting it into practice.

What Is HubSpot's Nurture Agent?

HubSpot's Nurture Agent is a Breeze powered feature that dynamically personalizes automated marketing emails using content available in HubSpot.

Rather than relying exclusively on predefined messaging for each audience segment, Nurture Agent can rewrite subject lines, preview text, email body copy, and CTA text based on the individual receiving the email.

This represents a meaningful evolution from traditional email personalization.

Personalization tokens allow marketers to insert individual details, such as a recipient's first name or company, into otherwise standardized messaging. Smart content takes that further by displaying predefined variations based on established audience rules.

Nurture Agent builds on these capabilities by adapting the messaging itself. Instead of simply inserting contact content or selecting from existing content variations, it uses relevant context to determine how an email should be written for a particular recipient.

That means marketers can create one foundational email and use Nurture Agent to generate individualized versions without manually developing separate copy for each contact or segment.

How Does HubSpot Nurture Agent Work?

Nurture Agent uses the content available in HubSpot to understand the recipient and determine which details are most relevant to the email's purpose.

It can draw from several sources of content, including:

• Contact data: Job titles, lifecycle stages, industries, and other CRM properties.
• Company content: Company names, descriptions, industries, and associated records.
• Engagement history: Form submissions, website activity, and previous interactions.
• Additional CRM context: Relevant deal, ticket, and supported custom object content.
• Web research: Additional company context gathered through supported research capabilities.

Marketers can configure which CRM properties, objects, and activity sources are available for personalization.

Using that content, Nurture Agent evaluates the original email's message, objective, and CTA to determine how the content can be made more relevant to the individual receiving it.

For example, consider an automated email promoting a guide to improving HubSpot reporting.

A standard version might simply encourage recipients to download the guide to learn how to make more informed business decisions.

For a VP of Marketing, Nurture Agent could emphasize gaining visibility into campaign attribution, lead generation, and marketing's contribution to pipeline.

For a Revenue Operations leader, the same email could focus on data consistency, reporting accuracy, and creating a more complete view of revenue activity.

The underlying resource and campaign objective remain the same, but the message is tailored to the priorities of each recipient.

Nurture Agent also works with HubSpot's Brand Voice settings to help ensure personalized variations remain consistent with an organization's established tone and messaging.

Ultimately, the opportunity is to make automated communication more relevant to individual recipients while maintaining the efficiency of an existing nurture strategy.

How to Set Up Nurture Agent in HubSpot

Getting started with Nurture Agent is relatively straightforward, particularly for teams already using HubSpot's automated marketing emails.

Here's how the process works:

1. Create or select an automated email. Start with a published automated marketing email in HubSpot. You can develop the original content yourself or use Breeze to help draft it. Establish the email's message, intended audience, and desired action before enabling personalization.
   
   
2. Enable Nurture Agent and configure your data sources. Navigate to Marketing > Email, open a published, non-transactional automated email, and select Personalize with Nurture Agent at the top of its performance page. In Personalization inputs, choose the CRM object types, properties, and supported activity types the agent can use.
   
   
3. Preview and refine personalized content. HubSpot allows you to preview personalized emails from different contacts' perspectives and compare them against the original. You can also review the agent's explanations for its changes and lock specific modules to prevent important messaging from being rewritten.
   
   
4. Activate personalization for a portion of your audience. Choose what percentage of recipients will receive the personalized version. The remaining contacts continue receiving the original email, giving you a comparison group for evaluating results.

You can adjust the percentage receiving personalized emails or turn off Nurture Agent as needed.

HubSpot recommends reviewing personalized examples before activation, making it possible to evaluate the quality of the messaging before expanding its use.

For the full walkthrough, see HubSpot's official Nurture Agent documentation.

Practical Use Cases for HubSpot Nurture Agent

The value of Nurture Agent becomes clearer when you consider where personalized messaging could improve existing marketing workflows.

While the feature can support a variety of automated emails, several applications stand out for B2B marketing teams.

1. Re-Engaging Inactive Leads

Re-engagement campaigns often rely on broad messaging designed to bring inactive contacts back into the funnel.

But a contact who previously downloaded a technical integration guide may have very different interests from someone who attended a webinar about demand generation.

With Nurture Agent, marketers can use available engagement history and CRM content to make those follow-ups more relevant.

Instead of sending the same generic check-in to an entire segment, the agent can adapt the messaging to reflect a recipient's previous interests or interactions.

This creates an opportunity to reconnect with inactive contacts through content and messaging that speaks more directly to what originally brought them into the funnel.

2. Personalizing Webinar and Content Follow-Ups

Webinars, events, and educational content generate valuable engagement signals, but follow-up campaigns don't always take full advantage of them.

Consider a webinar covering AI adoption, CRM data quality, and marketing automation.

A marketing leader might be most interested in applying AI to campaign execution, while a RevOps leader could be more concerned with the data infrastructure and governance required to support it.

Nurture Agent can help tailor follow-up messaging around those different priorities using the content available in HubSpot.

The same principle applies to educational nurture campaigns. Rather than introducing a resource with identical copy for all recipients, marketers can personalize how its benefits are presented based on each contact's role, interests, or previous engagement.

3. Supporting Free-Trial and Product Activation Campaigns

Nurture Agent can also support automated campaigns designed to engage free-trial users and encourage product adoption.

For example, when a lead begins a trial but stops progressing, the follow-up can reflect available lifecycle content, previous engagement, or product activity captured in HubSpot.

Someone who has demonstrated interest in a particular capability may benefit from a different message than someone who has only completed the initial signup.

By making follow-ups more relevant to the recipient's stage and interests, marketers can create a more natural progression toward the next action.

In each of these scenarios, Nurture Agent relies on the content available to it. The more accurately that content reflects a contact's needs and interactions, the more useful the resulting messaging can become.

How to Measure and Optimize Nurture Agent Performance

More personalized messaging sounds promising, but the real question is whether it produces more meaningful engagement and conversions.

One of Nurture Agent's most useful capabilities is the ability to compare personalized emails against their original versions.

When activating the feature, marketers can select the percentage of contacts who receive AI-personalized messaging while the remainder receive the standard automated email.

HubSpot's Nurture Agent reporting allows teams to compare metrics such as emails delivered, open rates, click rates, and click-through rates across both versions.

This creates an opportunity to evaluate how recipients respond to personalized messaging before expanding its use across additional workflows.

However, email engagement alone shouldn't determine whether personalization is successful.

Higher open rates or clicks may indicate that the messaging is resonating, but marketers should also evaluate whether recipients are taking the actions the campaign was designed to encourage.

Depending on the campaign, that could mean downloading a resource, registering for an event, requesting a demo, or progressing further through the buying journey.

These downstream outcomes may require additional CRM and campaign reporting beyond Nurture Agent's built-in comparison.

A practical approach is to start with one established nurture email, introduce personalization to a smaller audience, and evaluate the results over time.

From there, teams can refine their approach and expand Nurture Agent to additional campaigns where it demonstrates value.

What to Consider Before Using Nurture Agent

Although Nurture Agent makes individual email personalization more accessible, several factors influence how effectively organizations can use it.

CRM Data Quality and Availability

Nurture Agent's ability to generate relevant messaging depends on the quality of the context available in HubSpot.

Incomplete contact records, outdated company content, or inconsistent lifecycle data can limit how accurately the agent understands the recipient.

Before implementing Nurture Agent, marketing and RevOps teams should evaluate the CRM properties, engagement signals, and associated records they plan to use.

This includes ensuring important content is captured consistently and considering which data sources are actually relevant to each nurture campaign.

More data isn't inherently more valuable. The goal is to give Nurture Agent accurate, meaningful context that supports the intended communication.

Brand Consistency and Content Oversight

While Nurture Agent can generate individualized messaging, marketing teams still need control over what gets communicated.

HubSpot's Brand Voice settings help maintain a consistent tone across personalized variations, while the ability to lock specific email modules protects content that shouldn't change.

Marketers can also preview personalized versions, compare them to the original, and examine why the agent made particular changes.

These controls are particularly important when emails include specific promotional terms, compliance language, or carefully defined messaging.

Teams should also maintain existing email consent, eligibility, and data privacy practices when introducing AI-powered personalization.

Subscription Requirements and HubSpot Credits

Nurture Agent is currently available in beta for eligible Marketing Hub Professional and Enterprise customers and requires HubSpot Credits.

According to HubSpot's published credit rates, Nurture Agent consumes 10 HubSpot Credits for each email personalized for an individual contact.

For example, if an automated email reaches 1,000 contacts and 50% receive personalized versions, that would consume 5,000 credits for Nurture Agent personalization.

Organizations should consider their audience sizes, send frequency, available credit capacity, and expected outcomes when determining where to use the feature.

HubSpot also offers controls to manage credit consumption, including adjusting the percentage of recipients receiving personalized emails and setting usage limits.

Availability, credit requirements, and feature functionality may change as the beta evolves, so marketers should review HubSpot's latest documentation before enabling it.

What Nurture Agent Means for Marketing and GTM Teams

Nurture Agent reflects a broader shift in how AI is being incorporated into marketing execution.

Organizations already collect significant amounts of customer and prospect content through their CRM. That content supports segmentation, lead scoring, workflow automation, reporting, and sales follow-up.

Nurture Agent extends the application of that data into the content of individual marketing communications.

For GTM teams, this creates an opportunity to make nurture messaging more responsive to the content they're already collecting, without requiring marketers to manually develop an increasing number of content variations.

But realizing that opportunity depends heavily on the operational foundation supporting the technology.

New Breed's State of HubSpot 2026 research reinforces that connection. Among surveyed organizations, 35% of those classified as Operationally Mature reported a positive impact from AI on personalization, compared with just 14% of Foundational organizations.

While those findings reflect AI personalization broadly rather than Nurture Agent specifically, they highlight the importance of the systems, data, and processes supporting AI adoption.

The organizations positioned to get the most from capabilities like Nurture Agent will be those that can connect reliable customer content to thoughtful marketing strategies and measurable business objectives.

That means maintaining strong CRM data, defining clear nurture journeys, and understanding which signals should influence messaging at different stages of the customer lifecycle.

As AI becomes increasingly embedded in marketing workflows, those foundations will play an important role in determining how effectively organizations translate new capabilities into better customer engagement and revenue outcomes.

Make Automated Nurture More Relevant With HubSpot

HubSpot's Nurture Agent introduces new possibilities for personalized marketing automation, allowing teams to tailor email messaging using the CRM context and engagement content they already have.

For marketers, the opportunity is to deliver more relevant experiences across existing nurture campaigns without the manual effort of building countless email variations.

Getting the most from that capability requires the right foundation. Reliable CRM data, thoughtfully designed workflows, and continuous optimization all influence whether personalization translates into meaningful results.

Explore New Breed's AI Services to discover how we can help you put HubSpot's latest capabilities to work for your business.