CMDK (formerly Simplehuman) | Supercharge your Gmail

🚨 Simplehuman is now CMDK   |   New name. Same mission.  Read More.

Bulk unsubscribe and clean up your Gmail in one click

Gmail makes you unsubscribe one sender at a time. CMDK's Nuke feature blocks and deletes all emails from any sender instantly. No more spam, no more clutter.

How Nuke Works

Method What it does Limitations
Gmail Unsubscribe link Sends unsubscribe request to one sender One at a time. Does not delete old emails. Sender has 10 days to comply.
Gmail Manage Subscriptions Lists senders by frequency Still one sender at a time. No bulk action. Does not delete old emails.
Gmail Filters Auto-archive or delete future emails Manual setup per sender. Does not unsubscribe. Old emails remain.
Third-party tools (Clean Email, etc.) Dashboard to unsubscribe in bulk Requires full email access. Privacy concerns. Extra subscription cost.
CMDK Nuke Blocks sender AND deletes all their emails in one click Does not read or store your emails. Works instantly.

Why CMDK Nuke beats other unsubscribe methods

One click, fully gone

No privacy trade-off

Works from your toolbar

Part of a full productivity suite

Common Questions

Gmail's Manage Subscriptions feature lets you unsubscribe one sender at a time. For true bulk cleanup, CMDK's Nuke feature blocks a sender and deletes all their emails in a single click. No need to unsubscribe one by one.

Gmail does not have a button to unsubscribe from all emails at once. CMDK's Nuke feature is the closest thing: click the block button on any sender in your toolbar, and all their emails are deleted and future emails are blocked instantly.

When you see an email from a sender you want to get rid of, click the Nuke button in your Gmail toolbar. CMDK blocks the sender so you never hear from them again and deletes every email they have ever sent you. One click, fully gone.

Nuke only targets the specific sender you choose. It will not touch emails from other senders. If you accidentally nuke a sender, you can undo it. See our guide on how to recover accidentally nuked senders.

No. CMDK does not read or store your emails. It runs locally in your browser and only accesses Gmail to perform the actions you initiate. Unlike third-party inbox cleanup tools that require full access to your email, CMDK keeps your data private.

Clean Email and Unroll.me are separate services that require full access to your email account to scan and categorize your messages. CMDK is a Chrome extension that works inside Gmail without reading your emails. Nuke is one feature within a full productivity suite that also includes keyboard shortcuts, command bar, reminders, and read receipts.

Yes. 15-day free trial with full access to all features including Nuke. No credit card required.

Yes. Watch this short video to see how Nuke works: Watch on YouTube

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!
How to Bulk Unsubscribe from Emails in 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.
How to Bulk Unsubscribe from Emails in Gmail | CMDK
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.
How to Bulk Unsubscribe from Emails in Gmail | CMDK
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.
How to Bulk Unsubscribe from Emails in Gmail | CMDK
Dilip Goswami
Really good and helpful. And the developer was even very responsive to feedback!
How to Bulk Unsubscribe from Emails in Gmail | CMDK
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.
How to Bulk Unsubscribe from Emails in Gmail | CMDK
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!
How to Bulk Unsubscribe from Emails in Gmail | CMDK
Bill Brelsford
Works like a charm! Exceptionally GREAT SUPPORT - even for as small language as Hungarian. It can totally replace Superhuman.
How to Bulk Unsubscribe from Emails in Gmail | CMDK
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!
How to Bulk Unsubscribe from Emails in Gmail | CMDK
Chris Hallowes

    
“Incredibly useful.”

    
“Gmail superpowers without the cost or opacity”

    
“This tool is elite!”

Stop unsubscribing one email at a time

4.9/5

    

From 1000+ founders