AI email writer for B2B marketing: Personalise 1,000 emails in minutes
Think B2B emails are dead? Already confident in your marketing emails? Believe personalisation isn't scalable? Think again.
If you’re like me and many other marketers, Account-Based Marketing has been the natural response to a world where the B2B inbox has never been louder, and standing out is harder than ever. I’ve seen this trend evolve since I first practiced ABM in 2019, 6-years and two marketing agencies ago (Fifty Five and Five is my first AI marketing agency!). Why? Because studies have shown it improves performance:
- Momentum ITSMA’s latest benchmark: “nine in ten B2B organisations now run ABM”
- Forrester’s 2024 State of ABM survey: "81% of ABM programmes outperform “traditional” demand gen on ROI”
Despite this, marketers rarely build 1:1 personalisation into lead generation efforts. Think back to the last marketing emails you sent, can you say it was truly personalised to each individual? The last marketing email that blessed your inbox, did it feel like it was truly personalised to you?
AI email writing is here, but first take our test to see if you recognise some of these from your inbox
How AI transforms email marketing
Ok that is the old world. The reason for it is the same as it’s always been. Because good ABM is painstaking: hours of research, dozens of tabs, and only so many people-hours to go around.
Well AI email changes the math. With tools like Compass Data, a multi use tool here acting as an AI email writer tool, you can turn a handful of basic facts into relevant, human-sounding insights - at scale. In other words, the gap between “we know we should personalise” and “we actually do” is finally closing. AI personalisation will be changed marketing forever!
That’s me in the video! Follow along to learn all about AI-powered email personalisation. Or carry on reading.
What if you could personalise 1,000 messages with our AI email tool, with just 5 data points per contact?
Most marketing teams are sitting on a goldmine of contact data - and wasting it. Raise your hand if you have the following data readily accessible for pretty much all of your customers and leads: Company, Industry, First name, Last name, Job title?
Now raise your hand if you’re using this data to personalise your emails (or any other marketing outreach) so that they feel like they couldn’t possibly be meant for anyone else?
I see this with my clients all the time, and it’s not because they don’t want to do personalised email marketing. It’s because email personalisation typically takes a large amount of time, research, and money. Which then limits how many people your team can reach effectively.
Compass Data changes that. It uses AI to generate tailored, human-sounding messages - starting with as little as five data points per contact. Email AI! Whether you’re working with just a job title or a full set of data fields. Our tool doesn’t rely on enriched profiles or behavioural tracking. Instead, it uses smarter prompts and contextual awareness to produce high-quality output from whatever data you already have - you don't need to install add-ons, no extra integrations, just intelligent AI doing more with less.
Compass Data gave our campaign the edge it needed with insights no one else had.
We use Compass Data for our weekly sales blitz days and it is really effective.
At Escher Cloud we used Compass Data to carry out deep research on our competitors.
Is Compass Data an AI email writer? Is it the best way to do personalised marketing at scale?
Has AI email personalisation been solved by tools like Salesforce & HubSpot?
The short answer is absolutely not! As data enrichment tools, these guys are falling behind.
I’m not talking about formulaic structures like “Hi {First Name}, I saw you work at {Company}…” that people see straight through. According to Gartner, 63% of B2B buyers say the messages they receive feel generic, even when their name and company are included. That’s because swapping tokens isn’t personalisation - it’s automation dressed up.
Tools like Salesforce Marketing Cloud and HubSpot, while powerful, often require either extensive CRM integrations or costly data enrichment add-ons to produce anything beyond this type of surface-level personalisation. Read more about the hidden cost of data enrichment.
The old way
Think about how tools like Mailchimp or ActiveCampaign handle personalization: they rely on flowcharts and branching logic that resemble tree diagrams - "If user clicks link X, send email Y three days later." Or, "If contact is in segment Z, insert paragraph A." It's rule-based automation, not intelligence.
(SEO automation tools we are a fan of however!)
It's not clever AI email writing. The result is that even well-sequenced campaigns still rely on token-based placeholders and rigid templates, with minimal true context or nuance. There's no understanding of the person - just boxes ticked.
How it works, step by step
Compass Data doesn’t rely on static templates or basic field merges. It uses advanced language models, online research, and human-quality prompt design to craft insights that resonate. It’s not just filling gaps - it’s generating real relevance, at scale, using the data you already have. as an AI marketing agency it is the fruits of a lot of research.
Let’s break down how to turn basic contact data into high-quality personalised copy:
1. Upload your data
- Start with a CSV file.
- It could include five common fields (first name, last name, company, job title, industry), or any other structured data relevant to your use case.
- Compass Data accepts a wide variety of formats and fields - and if you're using our managed service model, you don’t even need to worry about formatting.
- Just share what you have and we’ll take care of the rest.
2. Add your prompt
- Inside Compass Data, you provide context: what you want the AI to do, who the message is for, what kind of tone you want, and how you want the output structured.
- If you're on a managed retainer, we help craft and optimise the prompt for you.
- You don’t need to be a prompt expert - we provide examples and templates that help you get it right.
3. Generate insights
- Compass Data combines your data with its own contextual and online research.
- It doesn’t just regurgitate what’s in the spreadsheet.
- It looks for meaningful angles - like industry trends, company milestones, or job role challenges - and reflects those in the copy.
4. Create personalised copy
- The output can be a sentence, a paragraph, or a complete message.
- You can tell Compass Data to insert the insight into a broader message, write multiple options, or follow a specific structure.
- Whether you’re generating this in-platform or having our team deliver it to you directly, you stay in control.
5. Review, edit, use
- You get a table of outputs you can drop straight into email tools, LinkedIn messages, landing pages - wherever you need it.
- With the managed service, we can even deliver pre-checked, campaign-ready assets.
- This workflow is fast.
- You can go from raw data to usable, relevant copy in minutes.
- And because Compass Data works line by line - generating for each contact individually - you avoid the repetitive, templated feel of batch tools.
Inside the engine room: The tech that drives AI email personalisation
Compass Data is more than a single function; it’s a suite of integrated tools designed to create the perfect ai email engine at scale. Let’s take a look at the engine room that drives it all.
1. The core engine: The latest OpenAI models, currently GPT-4o
This is the analytical brain of the platform. As we saw in the video, the GPT-4o tool is where your ai email is born. It doesn't just find information; it understands context, follows complex instructions, and generates human-like text. This is what makes it a true ai email generator, not just a simple automation script.
We used it in two key ways:
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To generate insights: The tool first acts as a researcher, uncovering genuine evidence that a person might be interested in your service.
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To craft the AI email: Once the insight is found, the tool switches roles to become a copywriter, crafting a unique, one-to-one sentence for each contact that flows perfectly within your message.
The level of control here is crucial. You can create custom instructions to tell the tool exactly how to format its response, ensuring every ai email you send is built on a foundation of structured, clean, and relevant data.
2. Google Search and Perplexity
A great ai email needs to feel current. To achieve this, our platform integrates with powerful research specialists like Google Search and Perplexity. When the "Use web search" function is enabled, these tools work in the background to provide the GPT-4o engine with real-time data from news articles, company blogs, and press releases. This ensures your ai email is fresh, relevant, and based on what’s happening in your prospect’s world today.
3. Content scrapers
While not used in this specific demo, the platform also includes other tools. Tools like our URL and LinkedIn scrapers can automate the process of pulling specific public information from web pages,
4. Find people
The ‘Find people’ tool helps you enrich your contact data. These components ensure you have the best possible data before you even begin to craft your ai email campaign.
Frequently asked questions
1. What data do I need to start, and what if my data is incomplete?
You can start with almost any set of simple data points. Our AI email writer is designed to work with this basic information. If some data is missing for a few contacts, the tool will still attempt to find insights, but providing all five points will yield the best and most accurate results.
2. Do I have to write the prompts myself, or are there templates?
While you can write your own custom prompts for maximum control, Compass Data also offers a library of pre-built templates for common tasks like generating insights and personalisation. This allows you to get started quickly without needing to be an expert in writing prompts.
3. Why do I need to run two separate prompts? Can't it be done in one?
The two-step process is designed for higher quality results. The first prompt focuses solely on finding the best possible insight for each contact. The second prompt then focuses on a different task: creatively turning that verified insight into a natural-sounding sentence. Separating these tasks ensures each one is performed more accurately.
4. How long does the process take for a large list of contacts?
The platform is built for scale. While a small list of 10 contacts is processed in seconds, the system can handle thousands of rows of data efficiently. The time taken will depend on the size of your list, but it is significantly faster than any manual research process, saving you hours or even days of work.
5. What if the insights or personalised sentences aren't accurate?
The quality of the output is directly related to the quality of your prompts. Any AI email writer is not magic. If you find the results aren't quite right, you can refine your prompts by providing more specific context, clearer instructions, or better examples. This iterative process helps you teach the tool to deliver exactly what you need.
6. Can I use the personalised insights for anything other than emails?
Absolutely. While the guide focuses on email marketing, the personalised sentences are perfect for any one-to-one communication. You can use them for LinkedIn connection requests and messages, direct mail campaigns, sales call scripts, or even to brief your sales team before they speak to a prospect.
7. How do I integrate the final output with my existing marketing platform?
Once the processing is complete, you can export the entire data set as a CSV file. This file will include the new columns containing your contact insights and personalised sentences. You can then easily upload this file into your CRM or marketing automation platform (like HubSpot, Salesforce, or Mailchimp) and map the new data to custom contact fields.
8. How is this different from using a virtual assistant (VA) or doing manual research?
The key differences are speed, scale, and consistency. While a VA can do this research, Compass Data can process thousands of contacts in the time it would take a person to do a handful. This allows you to personalise your marketing at a scale that is impossible to achieve manually, ensuring a consistent level of quality across your entire audience.
9. Is this tool only for B2B marketing?
The example in the video is for B2B marketing, which is a strong use case because of the need for highly targeted outreach. However, the principles of generating insights and personalising communication can be applied to other areas, including B2C marketing for high-value customers, partnership outreach, or even recruitment.
Real output - before and after personalisation
Let’s look at the difference Compass Data can make in practice for your team.
Here’s an example of the type of personalisation you can expect with traditional outreach tools, stop me if you’ve seen or sent an email that starts like this:
"Hi John, I saw you work at Acme Corp. We help companies like yours achieve better results with automation."
This kind of message is so generic it could be sent to anyone. There's no context, no relevance, and no value exchange. You’re making the recipient have to put in effort to determine if you’re worth their time - which is the exact moment they delete your email.
Here’s an example of what Compass Data can do using the same datapoints shown above (First Name, Company, Job Title):
"Hi John, I noticed Acme Corp has recently expanded into industrial robotics. That shift creates new pressure on your operations team - which is where our intelligent workflow engine can help."
That’s the power of insight. Compass Data doesn’t just personalise names - it personalises context.
We’ve seen clients:
- Reference industry trends specific to the recipient's company
- Surface recent news or strategic priorities
- Tailor language and tone to the role’s likely responsibilities
Even across large datasets, every message feels considered - because Compass Data works line by line, adapting its output to each contact.
And for teams using Compass Data as a managed service, these outputs are reviewed and packaged in the exact format you need: ready for email platforms, CRMs, or sales automation tools.
Case study - why AI email worked for Northern Data Group
Northern Data Group used Compass Data to personalise outreach to more than 4,000 contacts across seven verticals in just two weeks. Each message included custom insights tied to job role, sector challenges, and recent company activity - delivered line by line through our managed service.
The results? A 52% increase in open rates, a 3.4x boost in replies compared to their previous outbound average, and an 18% lift in booked meetings. With no extra tooling or internal workload.
Personalisation and AI email isn’t about gimmicks. It’s about relevance. And when it’s done right, the results speak for themselves.
Clients using Compass Data regularly report:
- 50%+ increases in open rates compared to standard campaigns
- 2-3x higher reply rates on outbound outreach
- Substantial time savings - what once took hours of manual writing now takes minutes
Why? Because Compass Data surfaces insights that feel natural, not forced. Instead of guessing what matters to your audience, you’re drawing on real information - delivered with just the right context.
You don’t need a bigger team. You don’t need more tools. You just need to use the data you already have in a smarter way.
And with the managed service model, you’re not left figuring this out alone. We help you set up, test, and optimise - so every message is dialled in from day one.
Ready to personalise smarter?
If you’ve made it this far, you already know the old way isn’t working. Templates, tokens, and enrichment tools don’t scale the way you need them to. We are a fully fledged AI marketing agency, trust us on this.
Compass Data gives you a faster, simpler, more effective path to AI email writing - from as little as one data point per contact. Whether you’re looking to test a campaign, unlock a new market, or scale outreach across thousands of leads, we’ll help you do it right.
→ Ready to see it in action? Just share your goal and your data. We’ll handle the rest. Drop us a message or click the link below and we’ll walk you through how Compass Data could transform your outreach - no pressure, no jargon, just a quick look at what’s possible.
Transform your data into actionable insights
The best sales and marketing teams have the best intel, so get in touch to find out more about Compass Data
