If you're starting to use AI at work, the first step is settled: writing. Email replies, a line for an announcement, rephrasing meeting notes — this kind of "writing work" comes up many times a day, and each piece quietly eats your time. Start with the area that comes up most and that AI is best at, and you'll feel the payoff right away. In this chapter, non-engineer office workers will build the skill of "speeding up writing work with AI," ready to use today, complete with real prompt examples. Let's build on the mindsets from the previous chapter — you're in charge, and a human checks at the end.
The goal: turn one email from "5 minutes staring at a blank page" into "a 30-second draft"
Why writing is AI's greatest strength
Today's AI (ChatGPT, Claude, Gemini, and so on) has learned from vast amounts of text and is specialized in "assembling natural language." In other words, writing is where AI truly shines. You need to be careful with calculations and up-to-date accuracy, but "turning what you want to say into well-formed prose" is precisely its strongest skill. And office writing is often highly templated — requests, thanks, apologies — and AI knows those templates inside out. That's exactly why it's the entry point where you feel the payoff fastest.
You face a blank email screen and freeze on the opening line. You retype the phrasing and honorifics again and again, sometimes spending 10 minutes on a single message.
Just hand over the key points as bullets and a polished draft appears in seconds. You check the content, tweak it a little, and send. The work shifts from "writing" to "choosing and editing."
The key is to treat AI as your "drafting assistant." Don't demand a finished product outright — have it make the first draft, then finish it yourself. This division of labor makes writing work the easiest of all. For a broader picture of efficiency, the practical guide to boosting work efficiency with AI is also worth a look.
Speed up your email drafts
Let's start with email, which comes up most. There's only one knack: ask well. AI is capable, but it doesn't know your situation. Just conveying the following four things completely changes the quality of the draft.
An outside client, your boss, or a colleague? The relationship decides the right wording. A line like "a contact I work with regularly" is enough.
Request, thanks, apology, reminder, scheduling. Spell out clearly what you want the recipient to do with this one message.
Polite, formal, gentle, concise. Just add a word about the mood and the style will match.
Hand over the specific details you want included — dates, quantities, reasons. Leave these out and you get bland, generic prose.
Ask with these four in place, and a "please push the schedule back" email becomes something like this.
Write an email to a client asking to reschedule a meeting.
・Recipient: a contact I work with regularly (external)
・Purpose: move next Tuesday's meeting to Thursday of the same week
・Tone: polite and deferential, but concise
・Reason: something came up unexpectedly on our end (details can stay vague)
・Include a subject line
The trick is to hand it over as bullet points. You don't need to write it out in prose. Just line up the elements and AI assembles a natural message.
And here's what matters: "pushing" the message it gives you. Don't aim for perfect on the first try — finish it through conversation. If the draft comes out too stiff or too long, just keep going and ask like this.
・A bit more polite; make it sound more apologetic
・Cut the whole thing by about 30%
・Add a line of thanks at the top
・Don't use "quick note"; phrase it differently
・Present two alternative dates as bullet points
This feeling of nudging it "more like this" little by little is the core of writing with AI. It won't complain no matter how many times you ask for changes. Go back and forth until you're satisfied.
💡 Each type has its own knack. For an apology, keep the point short instead of piling on excuses; for a reminder, frame it gently as "just confirming"; for thanks, include one concrete thing that helped — adding a line about these aims improves the result. Practical examples of speeding up email replies are collected in tips for streamlining email and chat replies with AI.
Adjust tone and formality at will
Where AI is especially dependable is adjusting tone and formality. Even when "what you want to say" is the same, you need to change how you say it depending on the recipient. This "conversion" is AI's specialty. Write the content roughly first, then tune it to the recipient afterward, and the time you spend agonizing disappears.
Turn "Is this okay?" into "Could you please confirm this?" As if turning a dial for formality, it rephrases on the spot.
Turn a short note to a colleague into just-right formality for a client. And softening an overly stiff message for internal use takes only a moment.
It can insert softening lines like "I'm sorry to trouble you" or "if it's not too much trouble" in the right spots. It can also dial back when there are too many.
The actual conversion just takes an ask like this. Write the message plainly and just specify the recipient.
[The ask]
Turn the following note into a polite business email to an external client. Add softening phrases in moderation.
"Where's the doc? I need it for tomorrow's meeting, so I want it by end of day."
[What comes back (example)]
Thank you for your continued support. I'm sorry to trouble you, but as I'd like to use it in tomorrow's meeting, I would be grateful if you could send over the document we requested earlier by end of day today. Apologies for the short notice, and thank you very much for your help.
A blunt note became a message you can send as-is. You can also fine-tune with "convey a bit more urgency" or "but not so much that it feels pushy."
✅ When unsure, get two versions. Ask "give me two versions, one polite and one casual," then compare and pick. To learn more about asking well, head to the practical prompt engineering guide and AI writing in practice.
Chat, notices, and announcements
Beyond email, AI shines with short messages on Slack or Teams too. Chat is tricky to balance — "short, just the point, but not rude." Hand over your message and ask it to "make this concise for chat," and it trims it to just the right length.
Turn "Please check on X" into a form the recipient can act on at a glance. It's also good at trimming a long, email-style message down for chat.
Schedule changes, system maintenance, event notices, and the like. It lays out "when, what, what happens, and what to do" without gaps.
Structure rambling content into headings plus bullets. It can put it in a form that's easy to read in chat.
Write an announcement to post in our internal chat.
・Content: next Wednesday from 1–3 p.m., the internal system will be down for maintenance
・Also warn that data can't be saved during that window
・Tone: gentle, but make the key points stand out in bold
・End with "questions go in this thread"
・Keep it from getting too long
Fine-tune it to your workplace's vibe with things like "add just one emoji" or "make it more businesslike," and you're done.
Proofreading, summarizing, and rephrasing
Beyond writing from scratch, polishing text you already have is one of AI's strengths too. Text you wrote yourself, a long message you received, an internal document — you can hand off the "read, fix, shorten" work all at once. The finishing stage of writing gets much easier.
It flags typos, wrong conversions, and awkward or doubled-up honorifics. Ask it to "list what you changed" and you can review as you apply the edits.
Condense a long email or document into "three lines" or "just the key points as bullets." It saves a lot of the time you'd spend reading a long message you received.
Turn jargon-heavy text into "words a middle schooler could understand." You can rewrite a difficult request into plain prose anyone can read.
Proofread this text. Fix typos and unnatural honorifics, and tell me what you changed in bullet points. On top of that, add a three-line summary of the whole thing.
(paste the text you want fixed here)
The trick is to ask it to "show me what you changed." If it rewrites the whole thing you can't tell what changed, so review the changes as you incorporate them.
Cautions when using it
Finally, let's confirm the lines to hold when using AI for writing work. Applying the previous chapter's "a human always checks at the end" and "don't enter confidential information" to writing gives you the following.
Dates, amounts, the recipient's name, product names — AI can get these wrong. Always check them with your own eyes before sending.
Don't paste customers' personal data or undisclosed content. Just masking the proper nouns and then asking is enough to get a polished result.
Don't send AI's text as-is; read it once and make it your own voice. The person sending it bears responsibility.
⚠️ Precisely because it's convenient, pause before you paste. Make a habit of asking every time, "Is this something that would cause trouble if it got out?" You can check where to draw the line on what to enter in information you should never enter into AI. Efficiency only matters when you can use AI safely.
- Writing is AI's greatest strength. Start with the high-volume, well-templated emails and messages and you'll feel the payoff fastest.
- For email, hand over ① recipient ② purpose ③ tone ④ conditions as bullets, then push it toward the finish with "more polite / shorter."
- From tone and formality conversion, to chat and announcements, to proofreading, summarizing, and rephrasing — you can delegate the entire writing process.
- But always check facts, numbers, and proper nouns, don't enter confidential information, and remember you're the one responsible at the end.
With this, your daily email and chat get much faster. Next, head to Chapter 3, "Automate meetings, minutes, and summaries." We'll look at how to have AI pull the key points and to-dos out of recordings and long meeting notes.