STTBox › Voice Typing for Gmail
Under review — coming soon to Chrome Web Store

Voice typing for Gmail. Dictate emails, hands-free.

STTBox works directly inside Gmail's compose window. Click, speak, done — no copy-pasting, no switching tabs. Free forever, 50+ languages.

No spam. One email when we launch.

How it works

Three steps to dictate in Gmail

1

Install STTBox

Add the free extension from the Chrome Web Store. No account needed to start.

2

Open Gmail, click Compose

Click inside the email body or subject line — anywhere you'd normally type.

3

Press Alt+Shift+V and speak

Your voice is transcribed directly into the email. Say "period" or "comma" to add punctuation.

Why STTBox

Built for Gmail's compose window

Most voice tools can't type in Gmail because Gmail's editor is a custom contenteditable element, not a standard input. STTBox injects native keyboard events that Gmail actually accepts.

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Works in compose & reply

Dictate the full email body, subject line, and reply boxes — not just basic inputs.

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50+ languages

Write emails in English, Chinese, Japanese, Spanish, French, Arabic, Hindi, and more. Switch instantly from the popup.

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AI email polish (Plus)

Select any dictated text → click AI Polish → instantly rewritten as formal, casual, or concise. Sounds professional every time.

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Your audio stays on-device

STTBox uses Chrome's built-in speech API. Audio never leaves your browser — no cloud, no recordings.

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No daily limits

Dictate as long as you want. No 5-minute cap, no account required, no paywalls on core features.

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Smart punctuation

Say "period", "comma", "new line", "question mark" and they're inserted automatically.

Comparison

STTBox vs other voice tools for Gmail

Feature STTBox Voice In Google Dictate
Works in Gmail compose✓ Yes✓ Yes✗ No
Free unlimited use✓ Always free✗ $9.99/mo✓ Free
AI rewrite & polish✓ Plus feature✗ No✗ No
50+ languages✓ Yes✓ Yes✓ Yes
Works on other sites too✓ All websites✓ Yes✗ Docs only
Audio stored on servers✓ NeverUnclearGoogle servers

FAQ

Voice typing in Gmail — questions answered

Yes. STTBox works inside Gmail's compose window and reply boxes. Click into the compose area and press Alt+Shift+V to start dictating. Your speech is transcribed directly into the email.
Google's built-in voice typing only works in Google Docs. Gmail's compose window uses a different editor that Google's own dictation doesn't support. STTBox injects native input events directly, so it works where Google's own tool doesn't.
Yes. STTBox's core voice typing in Gmail is completely free with no daily limits. The optional Plus plan ($4.99/mo) adds AI email polish and rewriting.
Yes. Click into the subject line field, then press the keyboard shortcut. STTBox detects the active text field and types into it.

Ready to stop typing emails?

Join the waitlist — get notified the moment STTBox hits the Chrome Web Store.

Also works on Notion, ChatGPT, Twitter, LinkedIn, and anywhere you type.