Email scams are a common way for cybercriminals to steal personal and financial information from unsuspecting users. One of the latest email scams is the MailBox Warning Email Scam, which claims that irregular activity was detected on the recipient’s email account and asks them to verify their identity by clicking on a link. In this blog post, we will explain what the MailBox Warning Email Scam is, how it works, and what to do if you have fallen victim to it.
What is the MailBox Warning Email Scam?
The MailBox Warning Email Scam is a phishing email that pretends to be from the mailbox security team of the recipient’s email provider. The email states that the server detected some irregular activities in the recipient’s email account and that they need to verify their email identity immediately by clicking on a link. The email also warns that if the recipient ignores this notice, their account will be shut down without further warning.
The email looks convincing and may use the recipient’s name, email address, or other personal details to make it seem more legitimate. However, the email is not from the mailbox security team of any legitimate email provider, but from cybercriminals who want to trick recipients into disclosing their account credentials.
This is how the MailBox Warning email scam looks:
Subject: You have [7] undelivered mails
MailBox Warning
Dear
Our server detected some irregular activities in your email today!
For your account security, we need you to verify your Email Identity immediately.
Please click the link below to secure your account.Verify Email Account
Please note that if you ignore this notice, your account will be shut down without further warning.
Thanks
How does the MailBox Warning Email Scam work?
The MailBox Warning Email Scam works by exploiting the fear and urgency of the recipients who may worry about losing access to their email account or having their account compromised. If the recipients click on the link in the email, they are taken to a fake login page that mimics the appearance of their real email provider’s login page. The fake login page asks them to enter their email address and password, and may also ask for other sensitive information such as security questions, phone number, or verification code.
Once the recipients enter their information, they are either redirected to another fake page that claims that their account has been verified and secured, or to their real email provider’s login page. In either case, the cybercriminals behind the scam have already captured their information and can use it to access their email account and other online accounts that are linked to it. They can also use their information to launch further phishing attacks, identity theft, or fraud.
What to do if you have fallen victim to the MailBox Warning Email Scam?
If you have fallen victim to the MailBox Warning Email Scam, you should take immediate steps to protect yourself and your online accounts. Here are some things you can do:
- Change your password for your email account and any other online accounts that use the same password or are linked to your email account.
- Enable two-factor authentication for your email account and other online accounts if possible. This adds an extra layer of security by requiring a code sent to your phone or another device when you log in.
- Scan your computer and devices for malware using a reputable antivirus software. Malware can be used to monitor your online activity, steal your information, or damage your system.
- Report the phishing email to your email provider and delete it from your inbox and trash folder. You can also report it to the authorities or organizations that deal with cybercrime in your country or region.
- Be alert and cautious when opening emails from unknown or suspicious senders. Do not click on links or attachments in emails that ask you for personal or financial information, or that create a sense of urgency or fear. Always check the sender’s address, the spelling and grammar of the email, and the URL of any links before clicking on them.
Is Your Device Infected? Run a Free Malware Scan
Slow performance, constant pop-ups, or strange behavior? These are classic signs of a malware infection. A quick way to check is to scan your device with Malwarebytes Free, one of the most trusted malware removal tools available. If you only visited a scam page and didn’t download or install anything, this scan is optional.
The free version detects and removes the most common threats, including:
- Adware — the cause of those annoying pop-ups
- Browser hijackers — unwanted redirects and changed homepages
- Trojans and spyware — hidden programs stealing your data
- Potentially unwanted programs (PUPs) — software you never asked for
👉 Select your device below — Windows, Mac, or Android — then follow the simple steps to download Malwarebytes, scan your system, and remove any threats it finds. The scan usually takes 5 to 20 minutes.
Run a Malware Scan with Malwarebytes for Windows
Malwarebytes is one of the most popular and trusted anti-malware tools for Windows — and it’s completely free for removing infections. It catches threats that many antivirus programs miss, including adware, browser hijackers, and trojans. Follow the steps below to scan your PC and remove what Malwarebytes finds.
Download Malwarebytes
Click the button below to download the latest version of Malwarebytes for Windows from the official source. The free version is all you need — it will scan your computer and remove adware, browser hijackers, and other malicious software at no cost.
Download MalwarebytesOfficial installer for Windows 11 and 10. Your download starts right away.Want real-time protection? See Malwarebytes Premium
Malwarebytes Free for WindowsScans and removes malware at no cost-
Install Malwarebytes
When the download finishes, open your Downloads folder and double-click the MBSetup file. If Windows shows a User Account Control pop-up, click “Yes” to allow the installation.
Follow the On-Screen Prompts to Install Malwarebytes
The setup wizard will walk you through a few quick screens:
-
Choose where you’re installing the program — “Personal Computer” or “Work Computer” — then click Next.
-
Malwarebytes will now install on your device. This usually takes under a minute.
-
When installation is complete, the “Welcome to Malwarebytes” screen will open automatically.
-
On the final screen, click Open Malwarebytes to launch the program.
-
Optional: Check for rootkits with a Custom Scan
You don’t need to change any settings for a normal scan. The standard Threat Scan in the next step is enough for most problems, so you can go straight to it.
If you also want to check for rootkits, use a Custom Scan. In current versions of Malwarebytes, rootkit scanning is only available there:
- On the Scanner tile, click the three-dot menu and select Advanced Scan.
- Choose Custom Scan. In its options, check Scan for rootkits.
- Select your system drive (usually C:\) as the location to scan, then start the scan. It takes longer than a Threat Scan.
- When it finishes, review and quarantine the results as described in the steps below.
Rootkit scanning isn’t available on Windows devices with ARM processors.
Start the Scan
Click the blue Scan button. Malwarebytes will automatically update its virus database and start checking your computer for malware.
-
Wait for the Scan to Finish
The scan checks your entire system for browser hijackers and other malicious programs, so it can take 5 to 20 minutes depending on your computer. Feel free to do something else — just check back occasionally to see the progress.
-
Quarantine the Detected Threats
When the scan is done, you’ll see a list of everything Malwarebytes found — malware, adware, and potentially unwanted programs. Click the “Quarantine” button to remove all of them at once.
Malwarebytes will now remove the malicious files and registry entries and move them safely into quarantine.
-
Restart Your Computer
Some threats can only be fully removed after a reboot. If Malwarebytes asks you to restart, click Yes. Once you’re logged back in, Malwarebytes has finished removing the threats it found.
When the scan is done, check whether the problems you noticed have stopped. If they continue, see the options below.
If you are still having problems with your computer after completing these instructions, then please follow one of the steps:
- Run a computer scan with ESET Online Scanner
- Ask for help in our Windows Malware Removal Help & Support forum.
Run a Malware Scan with Malwarebytes for Mac
Malwarebytes for Mac is a free on-demand scanner that removes the malware other security software tends to miss — adware, browser hijackers, and unwanted programs included. Cleaning an infected Mac with Malwarebytes has always been completely free, and it’s our go-to recommendation. Follow the steps below to scan your Mac and remove what Malwarebytes finds.
-
Download Malwarebytes for Mac
Click the button below to download the latest version of Malwarebytes for Mac.
Download MalwarebytesOfficial installer for macOS. Your download starts right away.Want real-time protection? See Malwarebytes PremiumMalwarebytes Free for MacScans and removes malware at no cost -
Open the Malwarebytes setup file
When the download finishes, open your Downloads folder and double-click the setup file to begin the installation.
-
Follow the On-Screen Prompts to Install Malwarebytes
The Malwarebytes for Mac Installer will guide you through a few quick screens. Click “Continue” and keep following the prompts until the installation completes.
When the installation is complete, Malwarebytes opens to the Welcome to Malwarebytes screen. Click “Get started“.
Malwarebytes needs Full Disk Access to check your whole Mac. When it asks, open System Settings > Privacy & Security > Full Disk Access, turn on Malwarebytes (it may be listed as Malwarebytes Protection), and confirm with your password or Touch ID. Then return to Malwarebytes. On macOS Monterey and earlier, this setting is in System Preferences > Security & Privacy > Privacy.
-
Select “Personal Computer” or “Work Computer”
Malwarebytes will ask what type of computer you’re installing it on. Click either Personal Computer or Work Computer, whichever applies.
-
Start the Scan
Click the “Scan” button. Malwarebytes will automatically update its detection database and begin checking your Mac for malware.
-
Wait for the Scan to Finish
Malwarebytes will scan your Mac for adware, browser hijackers, and other malicious programs. This can take a few minutes, so feel free to do something else — just check back occasionally to see the progress.
-
Quarantine the Detected Threats
When the scan is done, you’ll see a list of everything Malwarebytes found. Click the “Quarantine” button to remove all the threats at once.
-
Restart Your Mac
Malwarebytes will now remove all the malicious files it found. Some threats can only be fully removed after a reboot — if Malwarebytes asks you to restart, allow it. Once you’re logged back in, check whether the problems you noticed have stopped. If they come back, save the scan report and ask for help in our forum.
If the problems you noticed continue after the scan, see the options below.
If you are still experiencing problems while trying to remove a malicious program from your computer, please ask for help in our Mac Malware Removal Help & Support forum.
Run a Malware Scan with Malwarebytes for Android
Malwarebytes for Android scans your phone or tablet for malware, adware, and potentially unwanted apps. The free version scans only when you start a scan. Real-time protection, which checks apps automatically, is part of the paid Premium version.
-
Download Malwarebytes for Android.
You can download Malwarebytes for Android by clicking the link below.
Get Malwarebytes for AndroidOpens Google Play in a new tab.Want real-time protection? See Malwarebytes Premium for AndroidMalwarebytes for AndroidScans your phone and removes malware at no cost -
Install Malwarebytes for Android on your phone.
In the Google Play Store, tap “Install” to install Malwarebytes for Android on your device.
When the installation process has finished, tap “Open” to begin using Malwarebytes for Android. You can also open Malwarebytes by tapping on its icon in your phone menu or home screen.
-
Follow the on-screen prompts to complete the setup process
When Malwarebytes opens, it walks you through a short setup. Tap Get started and follow the prompts. If you see an offer for a trial or a paid plan, read it before you accept. You can skip it and keep using the free scanner.
Malwarebytes will ask for permission to access the files on your phone so it can scan them. Tap Allow, or turn on the permission in the Android screen that opens, then return to Malwarebytes.
-
Run a scan with Malwarebytes for Android
On the main screen, tap Scan now. In some versions, you open the menu, tap Scanner, and then tap Run a scan.
-
Wait for the Malwarebytes scan to complete.
Malwarebytes will now start scanning your phone for adware and other malicious apps. This process can take a few minutes, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.
-
Remove the detected apps.
When the scan has been completed, you will see a list of the threats that Malwarebytes for Android has detected. Next to each detected item, tap the menu icon (three dots), then choose to uninstall the app or delete the file. Android then asks you to confirm. Tap OK or Uninstall to remove the app.
-
Restart your phone.
When the detected apps are removed, restart your phone if Malwarebytes asks you to. Then check whether the problems you noticed have stopped.
If the problems you noticed continue after the scan, see the options below.
If you are still having problems with your phone after completing these instructions, then please follow one of the steps:
- Ask for help in our Mobile Malware Removal Help & Support forum.
- Only as a last resort, reset your phone to factory settings. Read the warning below first.
- Back up your photos, videos, files, and messages, for example to your Google account or a computer.
- Make sure you know your Google account email and password. The phone asks for them after the reset. If you changed the password recently, Google recommends waiting 24 hours before you reset.
- On a Samsung phone, also make sure you know your Samsung account password.
- If you use an authenticator app for two-step verification, move your accounts to another device or save your backup codes first.
Stay Protected: Block Ads and Malicious Sites
No scan can prove a device is completely clean, so it helps to block threats before they reach you. Most infections start with a malicious ad or a fake download button — so blocking them at the source is your best defense.
We recommend AdGuard, which blocks malicious ads, phishing pages, and dangerous redirects before they can reach you.
👉 Download AdGuard and browse safely
Conclusion
The MailBox Warning Email Scam is a phishing scam that tries to trick recipients into giving away their email account credentials by claiming that irregular activity was detected on their account. The scam uses fear and urgency to persuade recipients to click on a link that leads them to a fake login page where they are asked to enter their information. If you receive this scam email, do not click on the link or enter any information. Instead, delete the email and report it to your email provider and the authorities. To protect yourself from phishing scams, always be vigilant and careful when opening emails from unknown or suspicious senders, and never share your personal or financial information via email.
Join the discussion
0 commentsShare your experience or ask a question about this article.
Discussion
Start the conversation
Have a question or something useful to share? Add the first comment.