TempMailGrab Firefox Add-on

Instant disposable email for the privacy-first browser. Open a throwaway inbox from any tab, copy your address in one click, and catch OTPs without leaving the page.

Add to Firefox → Free, no account required.

What the add-on does

  • Sidebar or popup — reach your inbox from a slim sidebar or the classic toolbar popup, whichever fits your workflow.
  • One-click autofill — fill email fields on the active page with your disposable address without switching tabs.
  • Live OTP detection — verification codes are extracted and highlighted the instant the email lands; click to copy.
  • No data collection — the add-on talks only to tempmailgrab.com. No telemetry, no analytics SDK.
  • Cached mail stays readable — previously fetched messages remain accessible if connectivity drops.

Why Firefox

Firefox users tend to choose their browser for privacy, which is the same reason this tool exists: keeping your real inbox out of databases you never meant to join. Every add-on listing on AMO is reviewed by Mozilla, so what it does and does not touch is verifiable rather than a claim.

Prefer no install?

TempMailGrab works in Firefox with no add-on at all. Open tempmailgrab.com, get an address, receive mail — the add-on only saves you the tab switch.

Also available

The same tool is available as a Chrome extension and as a native Android app. For release notes, follow us on X (@tempmailgrab) or join the WhatsApp community.