Dead Letter — Signal Surveyor

Tracking since May 14, 2026.

Changelog

• Jun 2, 2026
  description

  Every time you open Instagram, Reddit, TikTok, or X without choosing to — the algorithm triggered you. Dead Letter makes that visible.
  
  Signal Surveyor intercepts your Gravel sessions. The ones the trigger loop sent you to, not the ones you chose. Before the page loads, it surfaces three numbers:
  
  6.2 hours per day — average daily social media consumption.
  47 days per year — what that compounds to annually.
  41% — the proportion of the average feed classified as outrage or negative-sentiment content.
  
  Then it gives you two options.
  
  Run a free 30-second Algorithm Profile at getdeadletter.com and see your personal Vulnerability Score — a 0–100 rating of your susceptibility to algorithmic manipulation, plus your Content Diet breakdown and Chemical Signature.
  
  Or start the Signal Stack — a free 7-day neurochemical recovery protocol, one action per day, grounded in peer-reviewed neuroscience on dopamine regulation and attention restoration.
  
  Or enter anyway. That's always available. It's logged.
  
  The extension tracks every interception and every time you entered anyway. That ratio — your build rate — is the only number that matters. The popup shows your Signals Intercepted count, your Entered Anyway count, and your Resistance Rate with a live bar. The data is yours, stored locally. Nothing leaves your browser.
  
  Dead Letter does not block anything. It does not lecture. It does not gamify your screen time with streaks or scores. It shows you the cost at the only moment the cost is legible — after you decided to go, before you arrived.
  
  This is not willpower. This is neurochemistry.
  
  Kill the noise.
  
  — getdeadletter.com

  Every time you open Instagram, Reddit, TikTok, or X without choosing to — 
  the algorithm triggered you. Dead Letter makes that visible.
  
  Signal Surveyor v2 intercepts your Gravel sessions — the ones the trigger 
  loop sent you to, not the ones you chose. Before the page loads, it surfaces 
  what that session actually costs.
  
  ─────────────────────────────────────────
  TWO MODES. ONE MECHANIC.
  ─────────────────────────────────────────
  
  CONSUMER MODE (the original)
  Before the page loads, surfaces three numbers:
    6.2 hours per day — average daily social media consumption
    47 days per year — what that compounds to annually
    41% — the proportion of the average feed classified as outrage or 
           negative-sentiment content
  
  Then offers two options:
    → Run a free 30-second Algorithm Profile at getdeadletter.com and 
      see your personal Vulnerability Score — a 0–100 rating of your 
      susceptibility to algorithmic manipulation, plus your Content Diet 
      breakdown and Chemical Signature.
    → Start the Signal Stack — a free 7-day neurochemical recovery protocol, 
      one action per day, grounded in peer-reviewed neuroscience.
  
  CREATOR MODE (new in v2)
  For earning creators losing reach. Every time you open a platform without 
  a posting or analytics intent, you're feeding the algorithm data about 
  your own audience's attention.
  
  Creator mode surfaces:
    62% — average reach drop this quarter for mid-size creators
    3.4× — scroll time vs create time for most publishing accounts
    $0 — what passive scrolling pays you
  
  Then offers:
    → Run a free 30-second Reach Audit at getdeadletter.com — we tell you 
      what the algorithm did to your account this week and why
    → Join the Signal Reports waitlist — weekly AI-generated reach 
      intelligence, $9/mo at launch. Early access = free for life.
  
  Choose your mode on first install. Switch any time from the popup or from 
  inside any interception overlay. The extension auto-promotes to creator mode 
  if you visit creator dashboards (YouTube Studio, Instagram Insights, 
  TikTok Analytics) more than twice in a week.
  
  ─────────────────────────────────────────
  WHAT STAYS THE SAME
  ─────────────────────────────────────────
  
  Or enter anyway. That's always available. It's logged.
  
  The extension tracks every interception and every time you entered anyway. 
  That ratio — your build rate — is the only number that matters. The popup 
  shows your Signals Intercepted count, your Entered Anyway count, and your 
  Resistance Rate with a live bar. The data is yours, stored locally. Nothing 
  leaves your browser without your action.
  
  Dead Letter does not block anything. It does not lecture. It does not gamify 
  your screen time with streaks or scores. It shows you the cost at the only 
  moment the cost is legible — after you decided to go, before you arrived.
  
  This is not willpower. This is neurochemistry.
  
  Kill the noise.
  — getdeadletter.com

• Jun 2, 2026
  short_description

  The algorithm routed you here. See what it costs.

  Your reach dropped. We tell you why. Algorithm intelligence for creators (and a consumer mode for the rest).

• Jun 2, 2026
  host_permissions

  *://*.instagram.com/*, *://*.twitter.com/*, *://*.x.com/*, *://*.tiktok.com/*, *://*.facebook.com/*, *://*.reddit.com/*, *://*.youtube.com/*, *://*.threads.net/*, *://*.pinterest.com/*, *://*.linkedin.com/*, *://*.snapchat.com/*, *://*.tumblr.com/*, *://*.buzzfeed.com/*, *://*.dailymail.co.uk/*, *://*.msn.com/*

  *://*.instagram.com/*, *://*.twitter.com/*, *://*.x.com/*, *://*.tiktok.com/*, *://*.facebook.com/*, *://*.reddit.com/*, *://*.youtube.com/*, *://*.threads.net/*, *://*.pinterest.com/*, *://*.linkedin.com/*, *://*.snapchat.com/*, *://*.tumblr.com/*, *://*.buzzfeed.com/*, *://*.dailymail.co.uk/*, *://*.msn.com/*, *://studio.youtube.com/*

• Jun 2, 2026
  permissions

  storage, alarms

  storage, alarms, tabs

Permissions & access

Permissions

storagealarmstabs

Host access

*://*.instagram.com/*, *://*.twitter.com/*, *://*.x.com/*, *://*.tiktok.com/*, *://*.facebook.com/*, *://*.reddit.com/*, *://*.youtube.com/*, *://*.threads.net/*, *://*.pinterest.com/*, *://*.linkedin.com/*, *://*.snapchat.com/*, *://*.tumblr.com/*, *://*.buzzfeed.com/*, *://*.dailymail.co.uk/*, *://*.msn.com/*, *://studio.youtube.com/*

Screenshots