Avoid The Unsuccessful Mail Delivery Report Email Scam
Table of Contents
A Hidden Threat That Looks Familiar
Many internet users have recently reported receiving an email claiming that some of their messages couldn't be delivered due to "low bandwidth." The email appears professional and urgent, complete with subject lines like "Action Required: Undelivered Mail Notification." It typically contains links labeled "Review Here" or "Release Messages," urging the recipient to act fast to retrieve lost emails. At first glance, it seems like a routine message from your email provider. But in reality, it's part of a growing wave of phishing scams targeting unsuspecting inboxes.
Here's what the fraudulent message says:
Subject: Undeliverable: Unsuccessful Mail Delivery Report
Unsuccessful Mail Delivery Report.
Some messages are restrained from delivering to - due to low bandwidth, we notify you to take prompt actions.
Review Here
Release MessagesMessage should be moved to inbox. Go to Mail Settings.
The True Purpose Behind the Message
Despite its seemingly legitimate appearance, this email is not sent from your email provider. It is crafted by cybercriminals aiming to deceive recipients into clicking fake links that lead to a fraudulent website. On that site, users are prompted to enter their email address and password to recover their undelivered messages. Once entered, the scammers capture the login details. This allows them to take over the victim's email account and potentially access other sensitive data.
Why Stolen Email Credentials Are Dangerous
Your email account is more than just a communication tool—it's a gateway to many other aspects of your digital life. If scammers get access to your email, they can sift through past messages to find personal data, financial details, or account credentials for other services. They can also use your email to send additional scam messages or distribute malware to your contacts. In more severe cases, the information found in your email could help them hack into your banking or social media accounts, leading to identity theft or financial fraud.
Red Flags That Signal a Scam
The most common indicators of phishing emails include:
- Urgent language pushing immediate action
- Poor grammar or awkward phrasing
- Suspicious links or buttons that don't clearly show where they lead
- Generic greetings like "Dear User" instead of using your name
- Claims of technical issues like "low bandwidth" that don't match how your email system typically operates
Even if the email design looks official, hover your mouse cursor over links (without clicking) to see the real URL destination. If it looks odd or unfamiliar, it's safer to ignore the message entirely.
Avoiding the Trap: What You Should Do
If you receive an email that seems suspicious:
- Don't click any links or download attachments.
- Do not enter your login details on any website linked to the message.
- Mark the email as spam or phishing through your email client settings.
- Report the scam to your email service provider or a national cybersecurity organization.
- If you've already interacted with the scam, change your password immediately, and enable two-factor authentication on your accounts if available.
Being proactive can limit the damage and protect you from further attacks.
The Broader Impact of These Scams
Beyond phishing for passwords, these types of emails are also used to distribute malware. The email may contain harmful attachments like ZIP files, fake invoices, or even Word documents that ask you to enable macros. Once opened, these files can install malicious software on your device, including ransomware, keyloggers, or spyware. Alternatively, the scam links might direct you to a site that quietly downloads malware onto your device or tricks you into doing it yourself.
Stay One Step Ahead of Cybercriminals
Scams like the "Unsuccessful Mail Delivery" email rely on familiarity and urgency to manipulate users into acting quickly. But it's always a good idea to be skeptical about things. Always double-check the sender's email address, be wary of vague or unusual instructions, and think twice before clicking a link.
Use security tools like spam filters, antivirus software, and password managers. And above all, trust your instincts. If something feels off, it probably is.
Final Thoughts
This type of scam isn't just a technical threat—it's a psychological trick. Scammers are betting on the fact that people are busy, distracted, and anxious not to miss an important email. By recognizing the tactics used in phishing emails and learning how to respond safely, you can protect yourself and your information.
Stay informed, stay cautious, and never let a scammer rush you into making a mistake.
