# MailFlash — Instant Email

> Protect your inbox from spam. Generate temporary email addresses instantly with built-in inbox and real-time notifications.

Canonical page: [https://chrome-stats.com/d/mailflash-instant-email](https://chrome-stats.com/d/mailflash-instant-email)

## Overview

- **ID:** `mailflash-instant-email`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** NetRunners S.L
- **Category:** privacy-security,social-communication
- **Version:** 1.1.0
- **Last updated:** 2026-07-01
- **First published:** 2026-06-28
- **Size:** 33 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/mailflash-instant-email/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/mailflash-instant-email/privacy/](https://addons.mozilla.org/firefox/addon/mailflash-instant-email/privacy/)

## Description

<strong>Generate disposable email addresses with one click. Receive real emails without ever exposing your personal address.</strong>

Tired of spam after signing up to any site? MailFlash is the fastest, cleanest way to protect your main inbox.

<ul><li><strong>One-click generation</strong> — random temporary email instantly</li><li><strong>Built-in inbox</strong> — read messages directly in the extension</li><li><strong>Automatic notifications</strong> — get alerted the moment an email arrives</li><li><strong>1-hour duration</strong> — long enough for any verification</li><li><strong>Real, functional emails</strong> powered by the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/a51e046e53fc84d6d2077b4ac4e78bf22532abbb7326a8c91d2d70d3b33cf772/http%3A//Mail.tm" rel="nofollow">Mail.tm</a> API</li><li><strong>No signup, no tracking, no ads</strong></li><li><strong>6 languages</strong> — English, Spanish, French, German, Italian, Portuguese</li><li><strong>Auto language detection</strong> with manual override</li></ul>

MailFlash does NOT collect personal data. Everything is stored locally in your browser and automatically deleted when the email expires (1 hour).

<ul><li>Signing up to websites without compromising your real email</li><li>Downloading ebooks or resources that require an address</li><li>Testing services without commitment</li><li>Quick email verifications</li><li>Protecting your main inbox from spam</li></ul>
<ol><li>Click the MailFlash icon in your toolbar</li><li>Hit "Generate temporary email"</li><li>Copy the address with a single click</li><li>Paste it wherever you need</li><li>Receive incoming messages directly in the extension</li></ol>
Developed by NetRunners S.L. with a privacy-first approach.

## Rankings

- #147,182 — Overall

## Permissions and access

### Permissions

- `storage`
- `notifications`
- `alarms`
- `clipboardWrite`

### Host permissions

- `https://api.mail.tm/*`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/mailflash-instant-email)