Short answer: To dictate an email in Spark, open a reply or new message, place your cursor in the body, and speak. On Mac, hold the Voice Keyboard Pro hotkey and talk. On iPhone, switch to a voice keyboard and tap its mic button to dictate directly into Spark.
Spark rebuilt email around getting to inbox zero. Smart inbox, pinned emails, snoozing, send-later, and shared drafts all exist to help you process mail faster. But there is one part of email that Spark's features cannot speed up: actually writing the reply. That is still you, typing word by word. And typing is the slowest step in the whole loop.
This is where voice dictation changes the math. Most email replies are short, conversational, and low on formatting — exactly the kind of text that pours out fastest when you speak instead of type. This guide covers how to dictate into Spark on both Mac and iPhone, and how to build an email workflow where talking clears your inbox in a fraction of the time.
Why dictate your Spark emails?
The case for voice in email is almost entirely about speed and volume. Consider the numbers. The average adult types about 40 words per minute; even a strong touch typist tops out around 80 to 100. But everyone speaks at 130 to 150 words per minute without trying. If you send a dozen substantive replies a day, dictation can hand you back a genuine chunk of your morning.
There is a quality angle too. Email is conversational by nature. When you speak a reply, it comes out sounding like you — warmer, more direct, less stiff than the careful sentences people construct while typing. For customer-facing roles, that human tone is worth a lot. We explored this further in voice typing for emails and in the broader case for beating email overwhelm.
Spark's whole promise is speed. Pairing it with dictation removes the one bottleneck Spark itself cannot touch.
Method 1: Dictate in Spark on Mac with Voice Keyboard Pro
Spark for Mac is a native app with a standard compose window, which means any system-wide dictation tool can type into it. Voice Keyboard Pro is a menu bar app designed for exactly this. It inserts transcribed text wherever your cursor is, in whatever app you are using — including Spark's reply and compose fields.
The workflow is:
- Open a reply or click Compose in Spark.
- Click into the message body so the cursor is where the text should go.
- Hold your Voice Keyboard Pro hotkey.
- Speak your message, saying "comma," "period," and "new paragraph" as needed.
- Release the hotkey. The text appears in the email in about a second.
Because it works at the cursor system-wide, there is nothing to set up inside Spark. You are not dictating into a separate window and pasting back — the words land directly in the draft. A few features make it particularly good for email:
- Natural punctuation. A well-punctuated email reads as more professional. Dictating your commas, periods, and paragraph breaks means the message arrives ready to send, not as an unbroken wall of text.
- Smart Vocabulary. Client names, company names, product names, and industry terms can be added to a personal dictionary with replacement rules so they transcribe correctly every time. No more "Deloitte" coming out as "delight."
- Works across every field. The same hotkey dictates into the subject line, the body, and even Spark's shared draft comments — because it does not care which field it is, only where the cursor sits.
If you also live in other mail apps, the same approach works everywhere. See our guides to dictating emails in Outlook on Mac and dictating in Superhuman for the same technique in different clients.
Method 2: Dictate in Spark on iPhone and iPad
A large share of email happens on the phone, and dictating on a small screen is where voice pays off most — thumb-typing a paragraph is slow and error-prone. On iPhone, the cleanest approach is a keyboard with a built-in microphone.
The Voice Keyboard Pro iPhone keyboard adds a dedicated mic button to your keyboard. Once installed, it works inside Spark like any other app:
- Install the Voice Keyboard Pro app and enable its keyboard in Settings → General → Keyboard → Keyboards.
- Open Spark and tap Reply or Compose.
- Tap into the message body, then switch to the Voice Keyboard Pro keyboard with the globe key.
- Tap the mic button and speak. Your reply appears as you talk.
Because it is a keyboard rather than a standalone app, you never leave Spark. For a full walkthrough of setting up a mic keyboard on iOS, see our guide to the iPhone keyboard with a microphone, and our general guide to dictating emails on iPhone.
Two iPhone features are especially handy for email:
- Voice Edit. Caught a wrong word before sending? Instead of tapping precisely to fix it, you can speak the correction and it is applied. On a phone, this is far quicker than repositioning the cursor by hand.
- Two-way translation. If you email clients or colleagues in another language, you can dictate in one language and have the reply appear in another, across 24 languages, right inside Spark.
Method 3: Built-in Apple Dictation
Both macOS and iOS include Apple's own dictation, and it works in Spark. On Mac you trigger it with a keyboard shortcut set in System Settings; on iPhone you tap the mic on the standard keyboard. It is free and already there, which makes it a fine place to start.
The limits show up quickly for anyone dictating a lot of email:
- Accuracy dips with accents, background noise, and specialized vocabulary, and you cannot easily teach it your clients' names or your company's terms.
- On some macOS setups it can stop after a fixed window, which interrupts longer replies mid-sentence.
- There is no personal dictionary with replacement rules, no speak-a-correction editing, and no built-in translation.
For a quick one-line reply, Apple Dictation is perfectly fine. For processing an inbox full of substantive messages, a dedicated tool that keeps up and learns your vocabulary saves real cleanup time.
A dictation workflow for inbox zero in Spark
Spark's features and voice dictation reinforce each other. Here is a way to combine them so replies take seconds, not minutes.
1. Batch your replies and speak them in a run
Use Spark's smart inbox to group what needs answering, then go top to bottom, dictating each reply. Speaking keeps you in a rhythm — open, talk, send, next — that typing tends to break. Most people find that once they start dictating replies in a batch, they clear far more email per sitting.
2. Draft by voice, tidy by keyboard
Speak the whole reply first without stopping to fix anything, then do a quick keyboard pass for the two or three things that need precision — a name, a number, a link. Trying to perfect each sentence as you dictate kills the speed advantage. Draft loose, then polish.
3. Dictate your reusable phrasing, keep it human
Even if you keep templates in Spark, the personal touches still get typed. Dictate those — the "great to hear from you" and "let me look into that and get back to you" bits come out warmer spoken than typed, and faster too.
4. Handle mobile email hands-light
On the phone, dictation turns a two-minute thumb-typed reply into a fifteen-second spoken one. Waiting for coffee, walking between meetings — those are moments you can now clear real email instead of just triaging it. This is also gentler on your hands over a long day, which matters if typing aggravates your wrists; more on that in RSI prevention with voice typing.
Common problems and fixes
Text appears in the wrong field
Dictated text goes to wherever the cursor is. In Spark, click into the message body before dictating so the words do not land in the subject line or a search box. On iPhone, tap into the body area first, then activate the mic.
Names and companies transcribe wrong
This is the most common email frustration. With Voice Keyboard Pro's Smart Vocabulary, add each client name, company, or product term once with a replacement rule and it will transcribe correctly from then on. Our guide to custom vocabulary that learns your words covers this in detail.
The email has no punctuation
Speak your punctuation. Say "comma," "period," "question mark," and "new paragraph" as you go. It becomes second nature within a day. See our dictation tips for better accuracy for more.
Longer replies get cut off
If your tool stops partway through, you are likely hitting a session limit in the built-in dictation. A tool built for sustained dictation handles long messages in a single take, so you can talk through a detailed reply without restarting.
Spark plus voice: clearing the inbox faster
Spark optimized every part of email except the writing itself. It sorts, snoozes, schedules, and shares — but the reply still has to come from somewhere, and for most people that somewhere is slow typing. Voice fixes the last bottleneck. When replies come out as fast as you can speak them, inbox zero stops being an aspiration and starts being a Tuesday.
The fastest email client in the world still moves at the speed of your reply. Speak the reply, and the whole inbox moves faster.
Voice Keyboard Pro works on the Mac as a menu bar app and on iPhone as a keyboard with a mic button, and only operational pings ever leave your device — your email content stays private. There is a free tier with daily limits so you can try dictating your next batch of Spark replies; Pro is $4.99 a month or $34.99 a year for unlimited use. Open your inbox, hold the hotkey, and talk your way to zero.