Why Personalisation Is Non-Negotiable
The primary drawback of many out-of-the-box AI writers is their default to a neutral, risk-free voice. This results in emails that feel flat and interchangeable. In a business context, where relationships are built on trust and rapport, a sudden shift
to a robotic tone can be jarring for clients and colleagues. Your unique writing style—your choice of greetings, sentence rhythm, and level of formality—is part of your professional brand. Preserving it is key to maintaining authenticity. Customisation ensures you get the time-saving benefits of AI without sacrificing the personal touch that makes your communication effective.
Start by Feeding the AI Your History
The most effective method for teaching an AI your style is to let it learn from your past work. Many modern AI email plugins can analyze your sent emails to understand your voice. Tools can detect patterns in your tone, pacing, preferred sentence length, and common sign-offs. You don’t need to provide thousands of examples; some tools can begin to grasp your style from as few as 10 to 20 sample emails. This process is often automated and secure, with the AI building a mathematical profile of your writing based on hundreds of your messages to create a stylistic fingerprint. This allows the tool to generate drafts that feel like you wrote them from the very start.
Master the Art of Custom Instructions
Beyond analyzing your history, the next most powerful tool is the 'custom instructions' or 'style prompt' feature. This is where you explicitly tell the AI how to behave. Instead of vague commands like “be friendly,” provide specific, actionable guidelines. For example, you might instruct it to: “Write in a warm, approachable, and confident tone. Keep sentences under 20 words. Avoid jargon and corporate speak. Always open with ‘Hi [Name]’ and close with ‘Best’.” The more detailed your instructions, the better the AI can align with your voice. Think of it as creating a style guide for your personal AI intern.
Choose the Right Plugin for the Job
Not all AI email tools are created equal, especially when it comes to customisation. Some, like Grammarly, excel at polishing and adjusting the tone of text you've already written. Others, such as those integrated into platforms like Superhuman or plugins like Mailmeteor, are designed to generate entire drafts that learn your voice over time. When choosing a plugin, look for features specifically mentioning style learning, voice matching, or custom instructions. Some tools operate directly within your email client (e.g., Gmail, Outlook), offering a seamless workflow without the need to copy and paste from a separate app.
Refine, Edit, and Iterate
Getting an AI to mimic your style perfectly is not a one-time setup; it’s an ongoing process of refinement. The first drafts an AI produces are just that—drafts. Your job is to act as the final editor. By consistently tweaking the AI's suggestions to better match your voice, you are continuously training the model. Every time you correct an awkward phrase or adjust the tone, you're providing valuable feedback. Over time, the AI becomes more accurate, and the need for heavy editing diminishes. Some systems are designed to have an acceptance rate of over 85% after around 50 validated emails, making the iterative process well worth the initial effort.
