CMDK for Safari: Gmail Shortcuts, Read Receipts & Snooze

What is CMDK for Safari?

CMDK is a native Mac app, installed from the Mac App Store, that puts a Cmd+K command bar, 25+ keyboard shortcuts, read receipts, natural-language snooze and snippets right inside Gmail in Safari. It runs locally, never reads or stores your email, and puts no AI on your inbox. Superhuman has no Safari app, so CMDK is the closest thing to Superhuman for Safari, a Superhuman alternative that never makes you leave Gmail. Free for 15 days, then from $9/mo.

Everything CMDK does, now in Safari

Command bar (Cmd+K)

Press Cmd+K for every email action: reply, archive, label, snooze, and more. No mouse, no menu hunting. It runs locally in Safari.

25+ keyboard shortcuts

Reply, archive, delete, label and snooze without leaving the keyboard. The same muscle memory Chrome users have, now in Safari.

Read receipts

See when your sent email is opened, with WhatsApp-style checkmarks in your inbox. The tracking pixel is yours, and CMDK never reads your email content.

Natural-language snooze

Type "next Monday 9am" and the email comes back exactly then. Reminders and follow-ups without a separate app.

Snippets

Reusable templates you drop in by typing a semicolon, with smart variables and placeholders. Stop retyping the same replies.

Split inbox

Tabs that separate work, personal and project mail at a glance, right on top of your existing Gmail.

CMDK vs Superhuman on Safari

	CMDK on Safari	Superhuman	Plain Gmail
Works in Safari	Yes, Mac App Store app	No Safari app	Yes
Command bar (Cmd+K)	Yes	Yes, separate app	No
Read receipts	Yes	Yes	No
Reads or stores your email	No, runs locally	Yes, for AI	Google does
Price	From $9/mo or $169 lifetime	$30/mo	Free
Free trial	15 days, no card	No free trial	n/a

Built for Mac, private by default

A native Mac app

Never reads your email

Stay in Safari

A third of the price

Common Questions

Is there a Superhuman for Safari?

No. Superhuman is a separate app with no Safari extension or Safari app. CMDK is the closest thing to Superhuman for Safari: it adds a Cmd+K command bar, keyboard shortcuts and read receipts inside your existing Gmail in Safari, and starts at $9/mo instead of $30/mo.

Is CMDK really a Safari extension?

Yes. CMDK installs as a native Mac app from the Mac App Store and runs as a Safari web extension inside Gmail. It is reviewed by Apple and has full feature parity with the Chrome version.

Which macOS and Safari versions are supported?

CMDK supports Safari 18 and later on macOS. You install the CMDK app from the Mac App Store, then enable the extension in Safari settings and allow it on mail.google.com.

Do read receipts work on Safari?

Yes. CMDK tracks opens and re-opens of the emails you send and shows WhatsApp-style checkmarks inside Gmail. The only difference from Chrome is that desktop notifications for opens are not available on Safari yet.

Does CMDK read my email?

No. CMDK runs entirely in your browser. It never uploads, reads, or stores the contents of your emails on any server. It only accesses Gmail to perform the actions you initiate.

How much does CMDK cost?

CMDK starts at $9/mo with a 15-day free trial and no credit card required. A $169 lifetime licence is available if you prefer to pay once. Superhuman, by comparison, is $30/mo with no free trial.

Have more questions? Contact Us ›

Wall of love

Loved by customers all across the world

Nice app. I like Gmail UI, but the shortcode options of Superhuman. So your app is the best of both worlds!

CMDK for Safari: Gmail Shortcuts, Read Receipts & Snooze

Brian Dainis

Literally the best email extension you could get. Amazing alternative to Superhuman. Super clean and just works. Definitely worth the price and they are super responsive to feedback.

Danny Nielsen

Solid extension that provides many of the key benefits of MUCH pricier tools. Even better that this lives in Gmail, so you can use other extensions as well.

Zachary Eisenstat

Great - simple as it says, but adds a bunch of convenient time saving features. I don't need a full on client, I just need my Gmail to be fast, and this does it.

Dilip Goswami

Really good and helpful. And the developer was even very responsive to feedback!

Dominic Roser

This is awesome. It massively speeds up and simplifies usage of Gmail. Great pricepoint too, and the developer is super active and amazing at feedback and improvements.

Brent Maxwell

Love it! This extension helps me fly through my emails so I can get out of my inbox and back to revenue producing work. And great support!

Bill Brelsford

Works like a charm! Exceptionally GREAT SUPPORT - even for as small language as Hungarian. It can totally replace Superhuman.

Zoltán Szabó

I have started using CMDK as a layer over my gmail. Once I got used to it I love it. CMDK provide real-time support - most impressive!

Chris Hallowes

The Gmail power tools Safari never had

Command bar, keyboard shortcuts, read receipts and snooze, right inside Gmail. A native Mac app. Runs locally. Never reads your email.