MailFlash — Instant Email

Name: MailFlash — Instant Email
Author: NetRunners S.L

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

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

1.1.0

Last updated: 2026-07-01

Features & Capabilities

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

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

One-click generation — random temporary email instantly
Built-in inbox — read messages directly in the extension
Automatic notifications — get alerted the moment an email arrives
1-hour duration — long enough for any verification
Real, functional emails powered by the Mail.tm API
No signup, no tracking, no ads
6 languages — English, Spanish, French, German, Italian, Portuguese
Auto language detection with manual override

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

Signing up to websites without compromising your real email
Downloading ebooks or resources that require an address
Testing services without commitment
Quick email verifications
Protecting your main inbox from spam

Click the MailFlash icon in your toolbar
Hit "Generate temporary email"
Copy the address with a single click
Paste it wherever you need
Receive incoming messages directly in the extension

Developed by NetRunners S.L. with a privacy-first approach.

User Growth & Download Statistics

Add-on

By:

NetRunners S.L

Daily users:

Version:

1.1.0 Last updated: 2026-07-01

Version code:

6328253

Creation date:

2026-06-28

Risk:

Permissions:

Host permissions:

https://api.mail.tm/*

Size:

33.02KB

URLs:

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 139,762 ▼ 31,315

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

NetRunners S.L

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/mailflash-instant-email/

Is MailFlash — Instant Email Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

MailFlash — Instant Email requires very minimum permissions.

Risk impact analysis details

High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
Low ******* ****** ** *** ********* ******** *******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

MailFlash — Instant Email is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****