A mail-system alert says six incoming messages never reached your inbox. A single link supposedly releases everything before the delayed mail disappears.
The subjects are left unstated, inviting curiosity to fill the gap. One strange footer sentence is the clue many hurried recipients overlook.
Overview
The alert invents a queue of missing messages
The Messages Failed to Deliver Due to System Delay email scam claims several incoming messages are stuck outside the recipient’s inbox.
The notice usually offers a Retrieve Messages link and says verification will automatically deliver the held mail.
The destination is a credential collection page
The button can open a generic webmail portal hosted on unrelated infrastructure. Some campaigns use decentralized storage gateways or compromised websites.
The page may display invented message subjects and ask for the mailbox address and password before “release.” Those credentials go to the operator.
The stolen inbox can spread the same deception
Attackers can read conversations, reset connected accounts, create hidden forwarding, and send new phishing from an address that recipients already trust.
Business mailboxes create additional risk because invoice and supplier conversations can support payment diversion or more targeted impersonation.
- The message claims exactly six emails are delayed.
- No legitimate sender, message ID, or delivery report is identified.
- A retrieve link replaces the provider’s normal quarantine controls.
- The footer may contain text copied from an unrelated legal document.
- The destination asks for the password of the mailbox receiving the notice.
- The page’s domain does not belong to the real email provider.
Why Missing-Message Alerts Create Fast Clicks
People know that spam filters, attachment policies, and server delays can hold genuine mail. A queue notice therefore sounds technically possible.
The scam avoids naming the missing senders. That uncertainty encourages recipients to imagine an urgent invoice, customer complaint, job offer, or personal message.
A specific count makes the queue feel measured. “Six messages” sounds like data generated by a system rather than a general threat.
Work users may worry about appearing unresponsive. Retrieving the mail feels like a small administrative action that prevents a larger professional problem.
The recipient is also positioned as the only person who can fix the delay. That discourages waiting for the mail administrator to resolve a real outage.
How Genuine Delivery and Quarantine Notices Differ
Legitimate nondelivery reports normally concern a message you attempted to send. They identify the recipient, status code, server response, and reason for failure.
Quarantine summaries may list sender, subject, date, and classification. Release actions should occur inside the organization’s established security portal.
A provider might require normal authentication, but the sign-in must take place on its recognized domain or the organization’s known identity service.
Mail administrators can confirm a queue through server logs and management consoles. An unsolicited external page cannot prove that messages exist.
A real system notice does not need unrelated wording about taxes, privacy regulations, or government powers to justify an ordinary inbox operation.
If the provider is experiencing a delay, service-status information or an administrator announcement should be available through independent channels.
How the Messages Failed to Deliver Email Scam Works
Step 1: A fabricated delivery warning reaches the mailbox
The subject may say “Unblock Messages,” “Undelivered Email,” or “Messages Pending Due to System Delay.”
The email presents itself as an automatic system notification. Generic branding lets one template impersonate many organizations and providers.
The sender can spoof a friendly display name while the underlying address belongs to an unrelated domain or compromised account.
Step 2: A precise message count creates curiosity
The body claims six messages failed to arrive and may be deleted unless retrieved.
No trustworthy server log, sender list, or message identifier supports the count. It exists to make the problem feel specific.
The recipient supplies the missing context mentally. Someone awaiting invoices will imagine invoices, while a job seeker may imagine recruiter responses.
Step 3: Copied footer text imitates compliance
Some versions add formal language about personal data, tax authorities, or regulations unrelated to email delivery.
The paragraph may have been copied from another document to make the notice appear legal and important.
Instead, the mismatch is valuable evidence. Automated mail systems use provider-specific policy information, not random regulatory language.
Step 4: The retrieve button opens external hosting
The link can lead through a redirector to a cloud file, compromised website, disposable domain, or public gateway serving decentralized content.
Recognizable infrastructure does not validate the uploader. Hosting services deliver customer content and can be abused before a malicious page is removed.
Campaign parameters may carry the recipient’s address and confirm that the link was opened.
Step 5: A false queue hides the password form
The page may invent subjects such as Invoice Review, Shared Document, Project Update, or Meeting Notes.
Those ordinary business labels increase urgency without exposing details that a real recipient could easily disprove.
A form requests the mailbox address and password. Releasing mail never requires giving the mailbox secret to an unrelated website.
Step 6: Submitted credentials are tested and preserved
The operator receives the form data and can test it against webmail, cloud storage, VPN access, and popular online services.
A visible error may request the password again. The page can then redirect to a real provider, making the unsuccessful retrieval appear temporary.
Criminals may register app passwords, forwarding, recovery information, or connected applications to maintain access.
Step 7: The inbox becomes infrastructure for more fraud
Messages sent from a genuine account can evade reputation checks and persuade contacts who would ignore an unknown sender.
Attackers may repeat the pending-message lure, send fake shared documents, or alter invoice details inside existing conversations.
Hidden rules can remove warnings and replies while copies of incoming mail continue reaching the attacker.
Sender, Hosting, Support, and Queue Checks
The sender must belong to the mail environment
Expand the header and compare From, Reply-To, and return-path domains with authentic system notices.
A label such as Mail Delivery System is not proof. Anyone can place those words in a display-name field.
The hosting address does not identify the operator
A cloud or decentralized gateway address may describe where content is delivered, not who created it.
Confirm the registered domain and path. An unrelated gateway cannot authenticate the recipient to a different mail provider.
Support can inspect a real queue
Contact the provider or workplace administrator through a known channel and ask whether six messages are actually held.
Administrators can review quarantine and delivery logs. They do not need the user to send a password through email.
The message list should contain verifiable data
A genuine quarantine record normally includes meaningful sender, subject, time, and reason information.
Generic business subjects displayed only after visiting an external page are easily invented and should not justify credential entry.
Why the Unrelated Tax Paragraph Matters
Scam templates are often assembled from copied components. A formal footer can be added without understanding the system being impersonated.
Wording about tax-authority powers has no operational connection to releasing delayed incoming email. Its presence breaks the story’s internal logic.
Criminal pages frequently rely on visual familiarity while neglecting semantic consistency. Reading slowly can reveal that different paragraphs describe different organizations.
Other mismatches include switching between quarantine, delay, account verification, and password expiration within the same short journey.
These errors are useful, but perfect grammar would not make the message safe. The external credential request remains the decisive issue.
What Attackers Do After an Inbox Is Compromised
The first action may be invisible. Criminals can search old mail for invoices, identity documents, reset links, customer records, and useful personal details.
They may create forwarding to receive future conversations without repeatedly signing in. Rules can hide security messages or replies from targeted contacts.
A business attacker can wait for a supplier payment, then send replacement bank instructions from inside the genuine thread.
Personal inboxes can expose shopping, financial, travel, medical, and social accounts through password recovery.
Contacts may receive fake documents or urgent payment requests. The trusted sender address makes this second wave more convincing.
Compromise can continue after a password change when active sessions, app passwords, or third-party authorizations remain valid.
What the Fake Message Queue Cannot Prove
A real mail system knows message identifiers, delivery times, sender information, rejection codes, and administrator contacts. Vague claims about six delayed emails prove nothing.
The number is chosen to create curiosity. It suggests important conversations are waiting while revealing too little for the recipient to verify independently.
A legitimate nondelivery report normally concerns a message you sent. It identifies the failed recipient and includes a technical reason from the receiving server.
Incoming quarantine notices are different. They should also be visible inside the organization’s established security portal, reached through a bookmark or normal sign-in route.
Language about a broad “system delay” avoids naming an actual server condition. It gives the scammer freedom to target users across many providers.
Unrelated legal or tax text in the footer is another clue. It may be copied from a template to make the message look institutional.
Before clicking, open webmail normally and check the inbox, spam folder, quarantine portal, and service-status page. Ask an administrator if a queue problem truly exists.
If coworkers received the same notice, forward it to the security team as an attachment. Original headers can reveal the sending infrastructure and redirect chain.
Deleting the lure is enough when nothing was opened or entered. A password change becomes necessary when credentials reached the counterfeit portal.
When uncertain, treat the email as a prompt to inspect the real service, never as the doorway into that service.
Warning Signs in the System Delay Email
- The notice arrives without a known provider or organization name.
- A precise count is given without real sender or message identifiers.
- The supposed queue is accessible only through an emailed link.
- Unrelated tax or privacy wording appears in the footer.
- The button opens a gateway, cloud page, or unrelated domain.
- The portal invents generic business subjects to increase curiosity.
- Releasing mail requires the password of a separate service.
- The page asks for another attempt after a correct password.
- No matching quarantine appears after opening the real mailbox directly.
Do not click merely to identify the supposed senders. Ask the mail administrator or open the established quarantine console from a known bookmark.
If no information was submitted, the account may remain safe. Still report the campaign so similar messages can be blocked for other users.
What to Do if You Have Fallen Victim to This Scam
Start with the mailbox because it may control recovery for many other accounts. Workplace users should involve administrators without delay.
- Change the mailbox password. Open the genuine provider directly and replace the exposed secret with a unique one.
- End unrecognized sessions. Revoke browser logins, application passwords, connected apps, authorization tokens, and remembered devices.
- Remove malicious mail rules. Inspect forwarding, filters, delegates, automatic replies, blocked senders, and rules that hide security notices.
- Repair recovery settings. Delete unknown backup addresses, telephone numbers, passkeys, or multifactor methods and register stronger protection.
- Review outgoing activity. Search Sent, Deleted, Drafts, Archive, and server logs for messages created during the compromise window.
- Warn recipients promptly. Tell contacts not to trust recent documents, login links, invoice changes, or urgent requests from the affected account.
- Secure linked services. Change reused passwords and inspect accounts that rely on the mailbox for password recovery or single sign-on.
- Preserve campaign evidence. Save the original email, headers, destination, screenshots, submission time, and any unexpected approval requests.
- Scan downloaded content. Malwarebytes can detect malicious scripts, installers, or attachments if the page delivered more than a login form.
- Block known malicious routes. AdGuard can reduce access to phishing and advertising destinations, but it cannot remove attacker sessions.
- Report the infrastructure. Notify the mail provider, workplace security team, gateway or hosting service, and appropriate fraud authority.
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:
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Choose where you’re installing the program — “Personal Computer” or “Work Computer” — then click Next.
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Malwarebytes will now install on your device. This usually takes under a minute.
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When installation is complete, the “Welcome to Malwarebytes” screen will open automatically.
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On the final screen, click Open Malwarebytes to launch the program.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Start the Scan
Click the “Scan” button. Malwarebytes will automatically update its detection database and begin checking your Mac for malware.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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
If you only opened the page, close it and review browser downloads. Avoid clearing everything until administrators preserve any evidence they need.
If a password was entered, assume collection succeeded. The absence of an immediate login alert does not prove the account remained untouched.
Frequently Asked Questions
Are six messages really stuck outside my inbox?
The email does not prove that claim. Check the real quarantine or ask the mail administrator to confirm delivery records independently.
Why does the page list realistic message subjects?
Generic subjects such as invoices and shared documents fit many workplaces. They can be invented without accessing the recipient’s actual mailbox.
Is an IPFS or cloud-hosted page automatically malicious?
No. Those technologies have legitimate uses. They simply do not prove that a particular login page belongs to your email provider.
Does reading the email infect the computer?
Usually not. Greater risk begins with opening attachments, running downloads, entering credentials, or granting access after following a link.
Why would the footer mention tax regulations?
The text may have been copied from an unrelated document to sound official. It has no logical role in an email-delivery notice.
Will changing the password stop forwarding?
Not necessarily. Review and remove forwarding rules, delegates, app passwords, connected applications, recovery methods, and remaining sessions separately.
The Bottom Line
The Messages Failed to Deliver email scam invents a six-message queue and uses curiosity to direct recipients toward a counterfeit release portal.
A real administrator can confirm delayed or quarantined mail without collecting a password on unrelated hosting. Check the normal console independently.
If credentials were submitted, secure the inbox completely, inspect hidden rules and sessions, warn contacts, preserve evidence, and report the malicious destination.
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