How to spot scams like "Mail Delivery Successful" email scam

Also Known As: Mail Delivery Successful scam
Damage level: Medium

What kind of scam is "Mail Delivery Successful"?

Our team has examined this email and concluded that the scammers behind it aim to trick recipients into providing passwords. This email is disguised as a letter from the email service provider. It contains a link to a phishing page asking to provide login credentials (email address and password).

Mail Delivery Successful email scam

"Mail Delivery Successful" email scam

The email claims that your message has been delivered to certain recipients. It contains the "Recipients" hyperlink suggesting that clicking it will open a list of recipients who have received the message. Clicking that link opens a deceptive website (a fake Webmail site) with a prefilled recipient's email address and a field for entering a password.

Scammers use the aforementioned website to steal passwords. Having an email address and a password compromised can lead to loss of access to personal accounts that use the exposed login credentials. Typically, scammers use stolen credentials to hijack accounts (and misuse them for malicious purposes) or sell that information on the dark web.

Threat Summary:
Name Mail Delivery Successful Email Scam
Threat Type Phishing, Scam, Social Engineering, Fraud
Fake Claim Your message has been delivered to certain recipients
Disguise Letter from the email service provider
Related Domain perkthej[.]ga
Detection Names (perkthej[.]ga) Avira (Phishing), Combo Cleaner (Malware), ESET (Phishing), Kaspersky (Phishing), Netcraft (Malicious), Full List Of Detections (VirusTotal)
Symptoms Unauthorized online purchases, changed online account passwords, identity theft, illegal access of the computer.
Distribution methods Deceptive emails, rogue online pop-up ads, search engine poisoning techniques, misspelled domains.
Damage Loss of sensitive private information, monetary loss, identity theft.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner
To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

How do spam campaigns infect computers?

As a rule, phishing emails are disguised as official letters from legitimate entities (e.g., companies, organizations). They are used to steal credit card details, login credentials, and other personal information. It is important to know that emails can be used to trick recipients into infecting computers with malware.

Examples of other emails of this kind are "SYSTEM NOTIFICATION Email Scam", "Email Shutdown In Progress Email Scam", and "Please Find Attached Receipt Email Scam".

How do spam campaigns infect computers?

Computers get infected via emails after opening malicious attachments or files downloaded via received links. In both cases, cybercriminals attempt to trick recipients into downloading and executing malware by themselves.

Usually, threat actors use Microsoft Office, PDF documents, JavaScript files, archive files like ZIP, RAR, or executable files to distribute malware. Not all file types infect computers after opening them. For instance, malicious MS Office documents do not infect computers until macros commands are enabled.

How to avoid installation of malware?

Never use third-party tools to update or activate installed software or download pirated software. Use tools provided by the official developers to update and activate the software. Also, do not click links or open attachments presented in suspicious (irrelevant) emails sent from unknown addresses.

Download files and software from legitimate sources (official pages). Using other sources (like P2P networks, shady websites, and third-party downloaders) can result in downloading malicious software (or files).

If you've already opened malicious attachments, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Text presented in the "Mail Delivery Successful" email letter:

Subject: Mail Delivery Successful

Your message has been delivered to the following recipients


Mail Delivery Subsystem successful

Screenshot of the phishing website:

mail delivery successful email scam phishing website

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Quick menu:

Types of malicious emails:

Phishing email icon Phishing Emails

Most commonly, cybercriminals use deceptive emails to trick Internet users into giving away their sensitive private information, for example, login information for various online services, email accounts, or online banking information.

Such attacks are called phishing. In a phishing attack, cybercriminals usually send an email message with some popular service logo (for example, Microsoft, DHL, Amazon, Netflix), create urgency (wrong shipping address, expired password, etc.), and place a link which they hope their potential victims will click on.

After clicking the link presented in such email message, victims are redirected to a fake website that looks identical or extremely similar to the original one. Victims are then asked to enter their password, credit card details, or some other information that gets stolen by cybercriminals.

Email-virus icon Emails with Malicious Attachments

Another popular attack vector is email spam with malicious attachments that infect users' computers with malware. Malicious attachments usually carry trojans that are capable of stealing passwords, banking information, and other sensitive information.

In such attacks, cybercriminals' main goal is to trick their potential victims into opening an infected email attachment. To achieve this goal, email messages usually talk about recently received invoices, faxes, or voice messages.

If a potential victim falls for the lure and opens the attachment, their computers get infected, and cybercriminals can collect a lot of sensitive information.

While it's a more complicated method to steal personal information (spam filters and antivirus programs usually detect such attempts), if successful, cybercriminals can get a much wider array of data and can collect information for a long period of time.

Sextortion email icon Sextortion Emails

This is a type of phishing. In this case, users receive an email claiming that a cybercriminal could access the webcam of the potential victim and has a video recording of one's masturbation.

To get rid of the video, victims are asked to pay a ransom (usually using Bitcoin or another cryptocurrency). Nevertheless, all of these claims are false - users who receive such emails should ignore and delete them.

How to spot a malicious email?

While cyber criminals try to make their lure emails look trustworthy, here are some things that you should look for when trying to spot a phishing email:

  • Check the sender's ("from") email address: Hover your mouse over the "from" address and check if it's legitimate. For example, if you received an email from Microsoft, be sure to check if the email address is @microsoft.com and not something suspicious like @m1crosoft.com, @microsfot.com, @account-security-noreply.com, etc.
  • Check for generic greetings: If the greeting in the email is "Dear user", "Dear @youremail.com", "Dear valued customer", this should raise suspiciousness. Most commonly, companies call you by your name. Lack of this information could signal a phishing attempt.
  • Check the links in the email: Hover your mouse over the link presented in the email, if the link that appears seems suspicious, don't click it. For example, if you received an email from Microsoft and the link in the email shows that it will go to firebasestorage.googleapis.com/v0... you shouldn't trust it. It's best not to click any links in the emails but to visit the company website that sent you the email in the first place.
  • Don't blindly trust email attachments: Most commonly, legitimate companies will ask you to log in to their website and to view any documents there; if you received an email with an attachment, it's a good idea to scan it with an antivirus application. Infected email attachments are a common attack vector used by cybercriminals.

To minimise the risk of opening phishing and malicious emails we recommend using Combo Cleaner Antivirus for Windows

Example of a spam email:

Example of an email spam

What to do if you fell for an email scam?

  • If you clicked on a link in a phishing email and entered your password - be sure to change your password as soon as possible. Usually, cybercriminals collect stolen credentials and then sell them to other groups that use them for malicious purposes. If you change your password in a timely manner, there's a chance that criminals won't have enough time to do any damage.
  • If you entered your credit card information - contact your bank as soon as possible and explain the situation. There's a good chance that you will need to cancel your compromised credit card and get a new one.
  • If you see any signs of identity theft - you should immediately contact the Federal Trade Commission. This institution will collect information about your situation and create a personal recovery plan.
  • If you opened a malicious attachment - your computer is probably infected, you should scan it with a reputable antivirus application. For this purpose, we recommend using Combo Cleaner Antivirus for Windows.
  • Help other Internet users - report phishing emails to Anti-Phishing Working Group, FBI’s Internet Crime Complaint Center, National Fraud Information Center and U.S. Department of Justice.

Frequently Asked Questions (FAQ)

Why did I receive this email?

Usually, cybercriminals obtain email addresses after a data breach. They send the same email to all addresses in their database (these emails are not personal).

I have provided my personal information when tricked by this email, what should I do?

If you have provided your login credentials, change all passwords immediately (especially if you use the same password for more than one account).

I have downloaded and opened a file attached to an email used to deliver malware is my computer infected?

If you have opened an executable file, your computer is most certainly infected. If the file attached to an email is a document (.pdf, .doc, or similar), you may have avoided the infection. Opening a malicious document is not enough for malware to infect a computer.

I have read the email but didn't open the attachment, is my computer infected?

Opening emails (even when they contain malicious links or files) is not harmful.

Will Combo Cleaner remove malware infections that were present in email attachment?

Yes, Combo Cleaner can detect and eliminate almost all known malware. When computers are infected with high-end malware, running a full system scan is necessary to detect it.

▼ Show Discussion

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

About PCrisk

PCrisk is a cyber security portal, informing Internet users about the latest digital threats. Our content is provided by security experts and professional malware researchers. Read more about us.

Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Mail Delivery Successful scam QR code
Scan this QR code to have an easy access removal guide of Mail Delivery Successful scam on your mobile device.
We Recommend:

Get rid of Windows malware infections today:

Download Combo Cleaner

Platform: Windows

Editors' Rating for Combo Cleaner:
Editors ratingOutstanding!

[Back to Top]

To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.