How to write emails up to 3× faster by voice

Most email isn’t hard to write. It’s just slow: the reply you know exactly how to answer, but which still takes five minutes of typing, rewording and fixing typos. Voice is the obvious shortcut — and also the one most people try once and drop, because the result needed so much cleanup that it wasn’t faster after all.

This is a workflow that actually saves time: what to say, in what order, and where the editing goes. It works with any dictation tool. Where it helps, we’ll show how it looks in Wisper.

Where the “3× faster” comes from

The number is real, with a caveat. In a study by researchers at Stanford, the University of Washington and Baidu, people entered short messages on an iPhone either by speech or with the on-screen keyboard. English speech input was 2.93 times faster: 153 words per minute versus 52. Speech also produced fewer errors during entry (5.30% versus 11.22% corrected error rate), though it left slightly more uncorrected errors in the final text (1.30% versus 0.79%).

On a computer keyboard the gap depends on you. A study of 168,000 volunteers typing online found an average of about 52 words per minute on physical keyboards, with the fastest above 120. If you type at 100 wpm, voice won’t triple your speed. If you type at 40, or you write most email on your phone, it easily can.

The honest takeaway: dictation makes drafting much faster; it doesn’t make editing disappear. The workflow below is about keeping the editing small.

The workflow: five steps

1. Decide the one thing the email must do

Before you talk, answer one question in your head: what do I want the reader to do or know? “Approve the budget by Friday.” “Know the launch moved.” Dictation is great at getting words out; it’s bad at rescuing an email with no point. Ten seconds of thinking saves a minute of rambling.

2. Say the ask first

Start with the request or the answer, then the context. When you type, you tend to warm up (“Hope you’re well, just wanted to follow up on…”). When you speak, that warm-up turns into three sentences. Say the ask, then the why, then any details:

Can you approve the Q3 budget by Friday? We need it to book the venue. The only change from last quarter is the travel line, which went up because the team is bigger.

3. Talk in paragraphs, not word by word

Say a complete thought, pause, say the next one. Don’t stop mid-sentence to watch the text appear, and don’t fix typos as you go — finish the draft first. If you change your mind mid-sentence, just say so: “three — no, Friday”. An AI dictation tool applies the correction; with plain dictation, you’ll fix it in the edit pass.

4. Let the tool handle the shape

The greeting, the line breaks, the sign-off and the punctuation are where plain dictation costs you time. You can say them (“new paragraph”, “comma”), but that breaks your flow.

With an AI dictation app, pick an email style and just talk. In Wisper, the Email style turns “ask Sam if we can move our call to Friday at 3” into a short email with a greeting, the request and a sign-off. Fillers like “um” and “like” come out; your wording stays.

5. Edit by selection, not by retyping

Read it once. If a paragraph is too long, too blunt or too stiff, select it and say what you want: “shorter”, “friendlier”, “more formal”. Wisper rewrites it in place on Mac, iPhone and Android, and there are one-tap versions — Polish, Formal, Casual, Bullets. Retyping a paragraph by hand is exactly the slow work you were trying to skip.

How to dictate in Gmail, Outlook and Apple Mail

Gmail

• On a phone: tap the microphone on your keyboard. Gboard’s help page lists spoken punctuation (“period”, “comma”, “new line”, “new paragraph”). On iPhone, the built-in keyboard has a mic key too. With the Wisper keyboard on iPhone you hold the mic and talk; on Android, the Wisper bubble floats next to the text field and works with any keyboard.
• On a computer: use your system’s dictation (on a Mac, the Microphone key or your Dictation shortcut) or a dictation app. On a Mac, Wisper pastes into the Gmail compose window like any other app: hold right ⌥, talk, let go.

Outlook

Outlook has its own Dictate button on the Message tab in new Outlook for Windows, classic Outlook, Outlook for Mac and Outlook on the web. Microsoft says it’s available to Microsoft 365 subscribers and needs an internet connection; it supports spoken commands like “period” and “new line” and has an optional auto-punctuation setting. Any system-wide dictation app works in Outlook too.

Apple Mail

Apple Mail uses macOS Dictation: click in the message body and press the Microphone key or your Dictation shortcut. Apple says Dictation stops after 30 seconds without speech, so for longer emails don’t pause too long between thoughts — or use a hotkey app that records while you hold the key.

Three emails, start to finish

Here’s what the workflow looks like on the emails people write most.

The quick reply. Someone asks if Thursday still works. You say: “Yes, Thursday works, but can we start at 3:30 instead of 3, I have a call that runs late.” In the Default style you get exactly that, punctuated. Total time: about as long as it took to read their email.

The status update. Say the headline first, then one paragraph per point: “The launch moved to Friday. Two reasons. First, the payment provider needs one more day for review. Second, we found a bug in the Android app that’s fixed but needs testing. Nothing else changes; the announcement goes out Friday morning.” Then select the two reasons and say “make it a bulleted list”.

The awkward one. Saying no to a client, chasing a late invoice. Dictate it the way you’d say it to a friend — blunt is fine — then select it and say “make it polite and warm, keep it short”. Starting from what you actually mean and softening it is much faster than typing a diplomatic version from scratch.

Small habits that add up

• Snippets for what you repeat. Your scheduling link, address or standard sign-off: save it once, then say a short phrase like “my calendly” and Wisper inserts the full text.
• A dictionary for names. Client names, product names and jargon are where dictation trips. Add them once.
• Batch your replies. Dictating five replies in a row is faster than switching between talking and typing all day.
• One language in, another out. If you write to people in another language, you can speak in yours and have Wisper write in theirs — it translates into 30 languages on Pro. More on that in our guide to voice to text in any language.
• Read before sending. Every tool mishears sometimes. A five-second scan is still faster than typing.

What it costs to try

Built-in dictation on Mac, iPhone and Android is free, and so is Outlook’s Dictate for Microsoft 365 subscribers. If you want the cleanup, styles and voice editing, Wisper has free daily dictations; Pro is $49.99 a year ($4.17/month billed yearly) with a 3-day free trial, or $19.99 a month. If you’re weighing it against other AI dictation apps, the comparison pages list prices and features side by side, with sources.

The best test is your own inbox: take the next five emails you’d normally type, dictate them with this workflow, and see how long the editing takes. That number — not the 3× — is the one that matters.