Is there a free trial?

Yes, 15 day free trial where you have access to all features of CMDK.

How many email inboxes can be used?

No limits. You can use it with as many inboxes as you want.

Do you offer refunds?

Yes. We offer refunds no questions asked, if you request a refund within 30 days of starting to use CMDK.

How do I cancel my subscription?

We use Stripe to manage payments and subscriptions, and you can cancel or manage your subscription anytime by visiting the Stripe subscription management portal.

How do you offer lifetime subscriptions?

CMDK is designed to work locally on your browser. This means we have negligible running costs and can afford to offer lifetime deals. We want to pass on the cost advantage to our users, and encourage long-term usage.

Do you have a mobile app?

We don't at the moment. But we have recommendations on the best email mobile apps. Write to us with your most important features and we will personalise the recommendation.

Why do Indian cards not work?

This is because of RBI regulations on the use of Indian cards. Go to the Indian cards payment page to purchase CMDK.

Is there a discount for education and non-profits?

Yes, please write to us at hello@cmdk.email.

Do you accept crypto payments?

Yes we accept stable coins, please write to us at hello@cmdk.email for more details.

The best Superhuman alternative that works inside Gmail

Hundreds of Superhuman users have already made the switch. Same speed, same shortcuts, a fraction of the price. Right inside Gmail.

CMDK vs Superhuman

Feature	CMDK	Superhuman
Price	From $9/mo or $169 lifetime	$30/mo ($25/mo annual). No lifetime plan.
Free trial	15 days, no credit card needed	No free trial
Works inside Gmail	Yes (Chrome extension)	No (separate app)
Email providers	Gmail and Google Workspace	Gmail and Outlook
Privacy	Does not read or store your emails	Reads and stores your emails for AI features
Command bar (Cmd+K)	Yes	Yes
Read receipts	Yes	Yes
Reminders & Snooze	Natural language	Yes
Unsubscribe / Nuke spam	One click	Limited (no bulk cleanup)
Keyboard shortcut nudges	Yes	No
Multiple inboxes	Unlimited	Limited
Learning curve	Familiar Gmail UI, instant	2-4 weeks to feel proficient

Why choose CMDK over Superhuman?

Stay in Gmail

Save $250+/year

Your emails stay private

No lock-in, no learning curve

Common Questions

What is the best alternative to Superhuman?

CMDK is the top-rated Superhuman alternative for Gmail users. It brings the same core features (command bar, read receipts, keyboard shortcuts, reminders, split inbox) directly into Gmail as a Chrome extension. No separate app, no learning curve, and it starts at $9/mo vs Superhuman's $30/mo.

Why are people switching from Superhuman?

The most common reasons: price ($30/mo adds up to $360/year), having to leave Gmail for a separate app, a steep 2-4 week learning curve, privacy concerns around Superhuman reading and storing emails for AI, and no free trial to test before committing.

Can I get Superhuman features without leaving Gmail?

Yes. CMDK is a Chrome extension that adds Superhuman-style features directly inside Gmail. You get the command bar (Cmd+K), keyboard shortcuts, read receipts, natural language reminders, and split inbox without switching to a different email client.

Is there a free alternative to Superhuman?

CMDK offers a 15-day free trial with full access to all features, no credit card required. After the trial, plans start at $9/mo, with a $169 lifetime option. Superhuman does not offer a free trial or free tier.

Does Superhuman read my emails?

Yes. Superhuman reads and stores your emails to power its AI features like auto-drafting replies. CMDK takes the opposite approach and does not read or store your emails. It runs locally in your browser.

Can I switch from Superhuman to CMDK?

Yes, and it takes about 30 seconds. Since CMDK works on top of Gmail, there is nothing to migrate. Install the Chrome extension, sign in, and your Gmail is exactly where you left it with all your labels, filters, and history.

Does CMDK work with Outlook?

CMDK works with Gmail and Google Workspace only. Superhuman supports both Gmail and Outlook. If Outlook is your primary email, CMDK is not the right fit. For Gmail users, CMDK is the better choice.

Can I use CMDK with other Chrome extensions?

Yes. CMDK works alongside other Gmail extensions like Grammarly, Streak, and Boomerang without conflicts. Superhuman replaces Gmail entirely, so other Chrome extensions will not work with it.

Have people actually switched from Superhuman to CMDK?

Yes. Hundreds of Superhuman users have switched to CMDK. One user said: "I was paying a massive monthly subscription just for a clean interface and fast keyboard shortcuts. CMDK provides the same Inbox Zero experience and speed for a fraction of the cost." Another said: "It doesn't force you to use all of the latest AI tools that I never wanted or needed. Kind of the best of all worlds."

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!

Best Superhuman Alternative for Gmail | CMDK

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!