SigndUp

Tracking since Jun 2, 2026.

Changelog

• Jun 8, 2026
  description

  Disposable email inboxes with automatic OTP extraction. Save and reuse temp accounts per website.

  Tired of giving out your real email address just to read an article, test a product, or claim a one-time discount?
  
  SigndUp is your all-in-one privacy sidekick. It instantly generates disposable email inboxes and secure passwords for any website, autofills your login forms, and catches OTP (One-Time Password) codes in real-time. Keep your personal inbox spam-free and your browsing completely secure.
  
  KEY FEATURES
  Instant Disposable Emails: Generate a unique, temporary email address for any website with a single click.
  
  Smart AutoFill: Our intelligent form-detection technology instantly identifies email and password fields, natively filling them in so you don't have to copy and paste.
  
  Real-Time OTP Extraction: Waiting for a verification code? SigndUp automatically listens for incoming emails, extracts the 4-to-8 digit OTP, and displays it in a massive, tap-to-copy font.
  
  Automatic Credential Saving: Never lose track of a temporary account. SigndUp securely associates the disposable email and password with the specific website domain you visited.
  
  Original Message Viewer: Need to click a specific verification link instead of an OTP? Easily toggle the original, sanitized email message right inside the extension popup.
  
  
  BUILT FOR UNCOMPROMISING SECURITY
  SigndUp handles your credentials with strict security protocols so you can browse with peace of mind.
  
  AES Encryption at Rest: Your generated passwords are encrypted before they ever leave your browser.
  
  Zero-Knowledge Architecture: Passwords are keyed specifically to your unique user ID. We cannot see, read, or access your saved passwords.
  
  7-Minute Auto-Lock: Forget to log out? Your session state is stored in temporary RAM (Chrome Session Storage) and completely clears itself after 7 minutes of inactivity.
  
  Manifest V3 Compliant: Built on the latest, most secure Chrome extension architecture, ensuring maximum privacy and minimal background resource usage.

Permissions & access

Permissions

activeTabstoragetabsalarms

Host access

https://*.supabase.co/*, https://api.signdup.net/*

Screenshots