The #1 PixelBlock Alternative for Chrome MV3

Take Back Your
Email Privacy

Block every tracking pixel before senders know you opened their email. Runs entirely on your device — your emails never touch our servers.

🛡️ Add to Chrome — It's Free See how it works →

30-day free trial · No credit card required · Gmail only

100% local — no server sees your emails
117+ tracker rules built in
MV3 Chrome Manifest V3 native
60+ companies identified by name
How it works

Invisible protection.
Zero effort.

Install once and Klopio works silently in the background — no setup, no configuration.

01

Install Klopio

Add to Chrome in one click. No account required. Your 30-day full trial starts immediately.

02

Open any email

Klopio scans for tracking pixels in the background. Known trackers are blocked before they fire.

03

See who's watching

The 👁️ badge shows exactly who is tracking you — by company name, not just raw domain.

Features

Everything you need.
Nothing you don't.

🚫

Network-Level Blocking

Tracker requests are intercepted at the network level using Chrome's declarativeNetRequest API — before they ever reach the tracker's server. Senders get no signal that you opened their email.

🏢

Tracker Identity Layer

See "HubSpot is tracking you" — not just a raw domain. Klopio identifies 60+ companies by name so you know exactly who is watching your inbox.

👁️

Inbox Warning Badges

Red 👁️ badges appear on email rows before you open them — so you always know which senders track you before clicking through.

📊

Weekly Privacy Report

A rolling 7-day report shows how many trackers were blocked, which companies tracked you most, and a shareable summary for X or Reddit.

🔒

Gmail-Scoped Only

Klopio only requests access to mail.google.com — never "all websites." We block trackers without becoming one.

⚡

Manifest V3 Native

Built from the ground up for Chrome's MV3 standard. No deprecated APIs, no workarounds — fully compliant and future-proof.

Privacy Promise

We block trackers without becoming one.

Every other email tracker blocker routes your data through their servers. Klopio runs entirely on your device. Your emails, your activity, your data — stays yours.

Comparison

The best PixelBlock
alternative.

PixelBlock and Ugly Email no longer work in modern Chrome. Klopio is built for MV3 — the standard all Chrome extensions must now use.

Feature Klopio 🛡️ PixelBlock Ugly Email
Works in Chrome today (MV3) ✓ Yes ✗ Broken ✗ Degrading
Network-level blocking ✓ Yes — —
Shows company names ✓ 60+ companies ✗ No ✗ Limited
Weekly privacy report ✓ Yes ✗ No ✗ No
No server sees your emails ✓ 100% local ✓ Yes ✗ No
Gmail-only permissions ✓ Yes ✓ Yes ✗ All URLs
Free trial ✓ 30 days full ✓ Free forever ✓ Free forever
Pricing

Simple, honest pricing.

30 days free, no credit card required. Cancel anytime.

Trial
Free
30 days, full access
  • Network-level blocking
  • Company name identification
  • Inbox warning badges
  • Weekly privacy report
  • No credit card required
Start Free Trial
Most Popular
Pro Annual
$29 / year
Just $2.42/mo · Save 40%
  • Network-level blocking
  • Company name identification
  • Inbox warning badges
  • Weekly privacy report
  • Priority support
Get Pro Annual
Pro Monthly
$3.99 / mo
Billed monthly · Cancel anytime
  • Network-level blocking
  • Company name identification
  • Inbox warning badges
  • Weekly privacy report
  • Priority support
Get Pro Monthly

All plans include a 7-day refund guarantee · Payments processed securely by LemonSqueezy

FAQ

Common questions.

Does Klopio work with Outlook or Yahoo Mail? +
Klopio currently works with Gmail only, accessed via mail.google.com in Chrome. This includes Google Workspace (GSuite) accounts. Support for other email clients may come in a future version.
Does Klopio block all tracking pixels? +
Klopio blocks 117+ known tracker domains and identifies 60+ companies by name. New trackers appear constantly — Klopio catches the vast majority but no tool can guarantee 100% detection of all tracking methods.
Can the sender tell I'm using Klopio? +
No. When Klopio blocks a tracking pixel, the sender simply receives no signal — to them it appears as if you never opened the email. Klopio is completely invisible to senders.
Does Klopio read my emails? +
No. Klopio only scans image URLs within emails to identify tracking pixel patterns. It never reads email content, subject lines, or sender addresses. All processing happens locally on your device.
I used PixelBlock — why did it stop working? +
PixelBlock was built on Chrome's Manifest V2 API, which Google has now disabled. All Chrome extensions must use MV3. PixelBlock has not been updated and no longer functions in modern Chrome. Klopio was built natively on MV3 from day one.
What happens after the 30-day trial? +
After 30 days, Klopio continues blocking trackers in the background. To see who is tracking you — company names, inbox badges, and the full weekly report — you'll need to upgrade to Pro. No credit card is required during the trial.

Your inbox deserves privacy.

Join thousands of Gmail users who stopped letting senders watch their every move.

🛡️ Add to Chrome — Free 30-Day Trial

No credit card required · Gmail only · Cancel anytime