Top AI Email Writers for HubSpot CRM in 2025

If you use HubSpot CRM, you know it’s great for managing leads. 

But using all the data you collect or writing emails that actually get replies? That’s where many teams struggle. HubSpot’s built-in tools definitely help, but they don’t always meet the standard needed for personalization and automation.

The good news is that there are AI email writers built for HubSpot. They plug directly into your CRM, create tailored emails in seconds, and free up your reps to focus on conversations that move deals forward.

Here’s a closer look at the top 6 AI email writers for HubSpot right now, as well as what you should look for in an AI writer.

What to look for when choosing an AI email writer for HubSpot

Getting prospects to actually reply to your emails is harder than it looks. A good AI email writer for HubSpot should feel like an assistant who saves you hours, keeps your tone natural, and helps you send messages with confidence.

Forget the hype about “next-gen AI.” 

What really matters are practical features that make your outreach more effective and easier to manage.

Native HubSpot integration

If your AI tool doesn’t plug directly into HubSpot, you’ll waste time moving data around instead of talking to leads. Proper integration pulls in all your leads’ contact details, notes their stage in the sales funnel, has custom properties so you can keep track of all your data, and even retains historical notes.

Two-way sync is non-negotiable, so that when you change a lead’s status in HubSpot, the AI tool knows instantly, and when a prospect replies to an email, that activity is logged in HubSpot automatically. This ensures that your CRM remains a single source of truth, without manual updates, and no changes slip through the cracks.

Deep search for quality personalization

Generic “Hi [first name]” cold emails are background noise in most inboxes. An effective AI writer pulls information from multiple HubSpot fields, like recent activity, industry type, and date of last interaction, and combines it with external intent signals.

For example, if a prospect just visited your pricing page and downloaded a whitepaper from your blog, the AI writer can create a follow-up email that mentions both actions and frames an offer around their specific interest. This kind of contextual detail can double reply rates compared to surface-based outreach.

Customizable messaging and tone

Your emails should sound like they came from you, not a robot. A good AI email-writing tool lets you adjust tone, like switching from warm and casual for small startups to concise and formal for enterprise prospects. It tweaks each email’s opening, closing, and call to action, keeping the tone of voice.

The AI tool should let you flexibly fine-tune templates and email frameworks to appeal to different prospect segments, industries, and even individual decision-makers.

Deliverability safeguards

All the personalization in the world is useless if your emails don’t reach your prospects’ inboxes. Advanced AI email writers build in deliverability features, including:

• Inbox warm-up (sending low-risk emails from new addresses to build sender reputation)
• Domain or account rotation to avoid spam filters
• Engagement tracking that flags sudden drops in open rates

These protections are especially critical for teams running high-volume outreach, where a single misstep can sink deliverability for an entire domain.

Team collaboration

When multiple people work the same lead, like when an SDR warms up the lead and then an account executive closes, smooth handoffs are essential. An AI writer with shared access means everyone sees the same contact history, messaging, and notes in one place. No duplicate outreach, no awkward “we already spoke” moments, and the transition from prospecting to closing feels seamless to the lead.

Multichannel support

Prospects don’t limit themselves to email, and neither should you. 

Although strictly speaking, multichannel outreach means a tool is no longer just an email writer anymore. It’s still good to have a strong AI writer that can create sales copy for LinkedIn InMail and even short phone scripts, all drawing from the same HubSpot contact data. 

This ensures that no matter the channel, messaging stays consistent, and you can run coordinated outreach sequences without juggling separate tools for each channel.

Top AI email writers for HubSpot CRM

To make your search easier, we’ve put together a list of the best HubSpot AI email writers that include many (if not all) of the features we just covered.

The tools below range from lightweight assistants that draft messages faster, to full-fledged AI SDR platforms that automate entire sequences. Depending on your team size, goals, and outreach style, one of these options should fit right into your HubSpot workflow.

AiSDR

AiSDR is an all-in-one AI-powered GTM platform for planning, executing, and optimizing inbound and outbound outreach. 

The AI personalizes messages using your HubSpot CRM data, runs fully customized sequences across email, LinkedIn, and other channels, and even replies to leads automatically. With built-in website visitor tracking, real-time sales intelligence, and multilanguage support, AiSDR makes sure every touchpoint is timely, relevant, and conversion-focused.

G2 score: 4.7 (53 reviews)

Key features

• AI-powered personalization: Uses prospect activity, internet research (news, tech stack changes, etc.), profile data, and HubSpot properties to craft relevant outreach and follow-ups.
• AI autopilot: Automatically generates and sends outreach, replies to leads, handles objections, and follows up at optimal times, so you can convert a cold lead to an SQL without manual effort. It also has a co-pilot mode if you want more hands-on control and less automation.
• AI strategist: Analyzes your website in general, or specific landing pages or high-conversion pages, and delivers five tailored, ready-to-launch GTM outreach plays based on your ICP, offer, and positioning.
• GTM engineer support: Offers support from a GTM tech specialist who aligns your technical setup with your sales strategy to maximize HubSpot workflows, campaign performance, and deal velocity.
• Website and LinkedIn visitor tracking: Identifies engaged accounts and triggers timely outreach.
• Multichannel sequence builder: Lets you customize sales flows across email, LinkedIn, and phone calls, with precise control over message order, delays between touch points, and message content.
• Deliverability features: Sets up and warms new domains, rotates inboxes, runs triple bounce checks, and tracks domain health to keep bounce rates under 5%.

Why it’s great for HubSpot

AiSDR plugs directly into HubSpot to pull contact, account, and activity data for hyperpersonalized outreach. This two-way sync feeds engagement insights back into HubSpot, to ensure that marketing, sales, and ops teams can track every touchpoint and hand off leads seamlessly between teams and channels. This creates a closed-loop system where GTM strategy, execution, and optimization all run in sync with your CRM.

Pricing: Plans start from $900 per month for 1,200 messages (LinkedIn and email)

Breeze 

Breeze is HubSpot’s own AI-powered solution that includes an AI email writer to generate sales and marketing messages. It pulls directly from CRM data to draft personalized emails you can modify for tone, length, and style.

G2 score: 4.4 (620+ reviews)

Key features

• Generative AI with CRM integration: Uses company insights and HubSpot contact data to produce context-aware drafts tailored to each lead.
• Chat-style interface: Use prompts with its conversational assistant to create introductions, follow-ups, and campaign copy in seconds.
• Workflow automation: Automates repetitive email tasks, from confirmation notes to follow-up sequences, so teams can focus on selling.
• Data enrichment: Contains over 200 million profiles to tap for hyper-personalized content driven by real-time insights.
• HubSpot apps integration: Integrates with over 1,800 other HubSpot apps and with third-party software.

Why it’s great for HubSpot

It’s native to HubSpot, so it automatically logs all interactions and pulls personalization straight from CRM data. It’s not just a HubSpot AI assistant for email writing, but a whole suite that integrates with all other HubSpot apps as your needs change. It’s perfect for mid-sized sales and marketing teams.

Pricing: $10 per month per seat as an add-on to Premium HubSpot plans.

Instantly

Instantly is a platform for cold email outreach with built-in AI that creates personalized sequences, warms up inboxes, and manages high-volume campaigns, all while maximizing message deliverability. It’s designed to help sales teams move faster by automating repetitive tasks and keeping all outreach activity organized in one place.

G2 score: 4.8 (3,700+ reviews)

Key features

• AI-generated sequences and follow-up: Creates full outreach campaigns with prospect variables based on user-generated prompts. Automates follow-ups triggered by replies, including out-of-office replies.
• Lead targeting tools: Finds prospects with filters for tech stack, headcount, buying signals, plus it has over 600 email templates and a user community.
• Unlimited warmup and scaling: Supports unlimited accounts with inbox rotation, spam checks, and verification for safe high-volume outreach.
• A/B testing and optimization: Runs unlimited tests and uses AI to conduct analytics on conversions and revenue, then doubles down on top-performing sequences.

Why it’s great for HubSpot

Instantly syncs with HubSpot through an API or Zapier, so leads, contacts, and campaign results flow straight into your CRM. It’s a good option for startups and small businesses doing medium- to high-volume outreach.

Pricing: Plans with AI features start from $42.30 per month.

Copy.ai

Copy.ai is a GTM AI platform that helps sales, marketing, and operations teams automate outreach, follow-up, and deal support while keeping messaging consistent with brand and account data. In addition to creating content, it uses AI-driven insights, forecasting, and lead prioritization to help teams focus on the opportunities most likely to close.

G2 score: 4.7 (180+ reviews)

Key features

• AI-based content creation: Generates polished emails, copy for social media, and other campaign assets with tone, style, and brand voice controls, and offers real-time translation.
• Strategic GTM workflows: Automates playbooks for prospecting, ABM, inbound follow-up, and deal support.
• Cross-team tools: Keeps sales, marketing, and operations aligned by centralizing content, workflows, and customer data.
• Predictive sales tools: Uses AI to score leads, prioritize outreach for faster wins, and forecast deal outcomes.
• Free AI tools: Offers a range of free AI tools to generate any type of content with prompts (not connected to any CRM)

Why it’s great for HubSpot

Copy.ai integrates with HubSpot through native and Zapier connections. It pulls CRM data to personalize content and pushes ready-to-use messages directly into HubSpot campaigns. This allows teams to run multichannel outreach without leaving the HubSpot environment.

Price: Plans start from $49 per month for one seat. Free trial is available.

Lavender

Lavender is an AI email coach that sits right in your inbox to help sales teams write sharper, more engaging emails on the fly. It’s designed to help teams write highly personalized messages faster and makes them more likely to get a reply.

G2 score: 4.8 (62 reviews)

Key features

• Email scoring & coaching: Grades the quality of your email in real time and offers tweaks to boost reply rates, aiming to ensure all emails score at least 90 out of 100 for quality, to help your messages land better.
• Personalization & research assistance: Pulls lead data, personality cues, and news snippets into your draft to improve personalization and make your outreach feel human and relevant.
• AI suggestions right in your inbox: Helps you start, refine, or completely rework copy without leaving your inbox.
• Team performance tracking: Provides managers with data-backed insights for coaching, tracking ROI, and improving the overall effectiveness of email outreach.

Why it’s great for HubSpot

Lavender integrates directly with HubSpot, Gmail, and Outlook so reps can personalize, score, and improve emails within their workflow. Teams can track performance metrics, identify winning approaches, and get data-backed insights for coaching in real time without extra clicks.

Price: Plans start from $27 per month. Free trial and a free plan with limited features are available.

Smartlead

Smartlead is an AI-powered platform, built to scale cold email outreach, keep deliverability high, and sync everything with your CRM. It’s especially useful for agencies and sales teams that run multiple campaigns and need volume without risking inbox reputation.

G2 score: 4.6 (269 reviews)

Key features

• Unlimited mailboxes: Supports an unlimited number of email accounts for scaling outreach across multiple domains, ideal for diverse campaigns.
• Automated email warmup: Uses AI to simulate human sending patterns, spintax, and smart replies to build reputation and ensure high deliverability.
• Cold-email personalization: Its SmartAI Bot generates tailored sequences, and integrations with enrichment tools ensure every message is relevant.
• Behavior-based subsequences: Automates email subsequence generation based on leads’ intentions.
• Unibox for revenue cycle management: Centralizes all channels, responses, and follow-ups in one inbox to streamline handling leads and closing deals. 

Why it’s great for HubSpot

Smartlead’s native HubSpot integration, plus support for webhooks and Zapier, means all sends, replies, leads, and updates flow automatically into your CRM tool. This is a strong pick for marketers and prescale businesses. Although its plans with AI features don’t have the lowest pricing, its monthly email volume allowance is substantial (150,000 emails).

Price: Plans with AI features start from $94 per month. Free trial is available.

Which AI email writer for HubSpot fits your needs?

With so many options, it’s not always easy to spot the right fit just by scanning feature lists. The best choice depends on how your team works, what stage of growth you’re in, and how much automation you actually want.

To make the decision simpler, we’ve broken down what each tool is best at, so you can quickly match their strengths to your specific goals.

Choose AiSDR if…

You want a full GTM engine that syncs tightly with HubSpot and handles strategy, execution, and optimization across multiple channels. 

It’s great for teams looking to draft hyperpersonalized emails, LinkedIn DMs, and even call scripts without losing their brand’s tone of voice. It’s also a perfect fit for those who want to automate all their outreach tasks, including lead search, messaging, and replying to leads.

Choose Breeze Intelligence if…

You need an easy-to-use AI email writer built right inside HubSpot. 

It’s perfect for midsized teams that want fast, personalized email drafts without fuss or extra tools.

Choose Instantly if…

You manage several inboxes, and your goal is sheer sending capacity with safety nets for domain health. It offers unlimited warmup, inbox rotation, spam checks, and HubSpot sync.

Choose Lavender if…

You want to sharpen email quality through real-time coaching, email grading, and personalization. 

It’s ideal for teams wanting to boost reply rates by improving the relevance of each message.

Choose Smartlead if…

You manage multiple campaigns or domains and need unlimited mailboxes, AI-driven personalization, and smooth CRM syncing. 

It’s built for growing businesses and agencies that require scalable cold email automation without risking inbox reputation.