How to Report Spam Email (And When You Actually Should)

Digital envelope labeled ‘SPAM,’ symbolizing spam email and email filtering issues.

These days, most spam emails get caught by your email provider’s spam filter. Every once in a while, you’ll get a stray spam email that shows up in your inbox, but these days, the biggest complaint people have about spam is an overactive filter, not an underactive one! 

So why bother reporting at all?

There are three scenarios where manual reporting actually matters: when someone is spoofing your email address or domain, when you’re dealing with sophisticated phishing that targets your specific organization, or when you need to understand why your own legitimate emails keep landing in other people’s spam folders.

That last one is the problem most people don’t see coming.

What makes an email “spam” in the first place? 

People sometimes use “spam” as a catchall for all unwanted emails, especially because the spam filter’s job is to prevent a lot of different kinds of emails from ending up in your inbox. 

Typically, an email is considered to be spam if it is: 

  • Unsolicited
  • Sent in bulk
  • Uses deceptive tactics like a spoofed sender address
  • Annoying
  • Fraudulent 
  • Directs recipients to phishing sites, malware, or other scams 

Is a spam email the same as a scam email? 

Many scammy emails are, in fact, spam (sent in bulk to people who never asked for them), but not all scams are distributed through spam. You could also be the target of email scams that come from people you know or emails you signed up for online, but didn’t realize were perpetrating fraud. 

How to Report Spam Across Different Platforms

The mechanics of reporting spam are pretty straightforward, though they vary slightly depending on where you read your email.

Reporting spam to Gmail

Click the “Report Spam” button at the top of any message. 

This does two things: it trains your personal filter to catch similar messages in the future, and it feeds data into Google’s larger spam detection system. If the same sender keeps getting through, use the “Block” option instead. That’s more aggressive and stops messages from that specific address entirely.

Reporting spam to Outlook and Microsoft 365

Look for the “Report Message” button in your toolbar. You’ll get options to mark something as junk or phishing, depending on the threat level. 

If you’re using a corporate account, these reports are likely set up to flow directly to your IT security team. They actually review patterns in what employees are flagging, especially when multiple people report the same sender or campaign.

Reporting spam to Apple Mail

Mark messages as junk using the button in your toolbar. Apple Mail’s mail app lets you mark messages as junk. This trains your client and iCloud’s filtering system, which may operate differently than Gmail/Outlook but still helps reduce unwanted mail.

Reporting spam to corporate email systems

Anything that looks like it’s targeting your organization specifically should go straight to your IT or security team. They need to know about attempts to compromise business accounts, even if the attempt seems obvious or clumsy to you.

Several digital email envelopes grouped on a screen, representing spam emails sent from a spoofed address.

When Manual Reporting Actually Becomes Critical

Although your own user experience may not change very much based on reporting an occasional spam email, there is one situation in which your report can make a big difference. 

If you work for a company and someone is sending spam emails that appear to come from your email address or your company’s domain, it’s essential to let someone know. 

Email spoofing happens when a spammer changes the “From” field to make their messages look like they originated from a legitimate source. Sometimes they pick random addresses, but sometimes they deliberately target a specific company or person. They know that if they send the email from what looks like a recognizable, trusted sender, the recipient is more likely to open the message. 

Signs of someone spoofing your email address 

  • Someone tells you that they received a spam-like email from you
  • Bounce-back messages for emails you never sent 
  • Replies to messages you didn’t send 

These are signs of a serious problem. First of all, each piece of spam with your forged address damages your reputation as a sender. Plus, when people mark your fake messages as spam, the system learns that your address sends unwanted mail. Then, your legitimate emails will start landing in the recipient’s spam filters. 

Illustration showing an email being flagged by a spam filter, highlighting how legitimate business emails can be mistakenly marked as spam.

Why do real emails end up in spam filters?

Those sophisticated filtering systems that catch spam? They can also trap emails you actually want to see—and flag your own legitimate messages as unwanted.

Understanding why this happens matters more than knowing how to report spam, especially if you’re sending professional emails or running any kind of business communication.

When your outgoing emails get flagged 

Spam filters look at dozens of signals when evaluating the messages you send. Some are about content: subject lines that scream urgency, text written in ALL CAPS, excessive punctuation, and too many exclamation points all resemble spam patterns. Messages that are nothing but a giant image or a wall of links raise red flags too.

But content is just the beginning. Technical authentication plays a huge role in whether your emails reach their destination. Your messages might get filtered out due to:

  • Improper SPF (Sender Policy Framework) or DKIM (DomainKeys Identified Mail) configuration
  • Incorrectly configured DMARC records (Domain-based Message Authentication, Reporting & Conformance)
  • Sending from a free email domain (like Gmail or Yahoo) for business purposes instead of a professional domain
  • Using a shared IP address with a poor reputation due to other senders’ behavior
  • Sudden spikes in email volume that trigger automated alerts
  • Missing or inconsistent sender information in email headers
  • Sending from a new or unwarmed domain without gradually building a reputation

There’s another factor that many people don’t consider: recipient behavior. If people consistently delete your emails without opening them, that trains the algorithm to assume your messages aren’t wanted. When recipients mark your emails as spam, even accidentally, that weighs heavily against you. 

Low engagement rates signal that maybe your messages shouldn’t be reaching inboxes at all.

When emails you want to receive get trapped in your spam filter 

The same system works in reverse when you’re on the receiving end. Legitimate emails might land in your spam folder because:

  • The sender has poor technical authentication or a damaged reputation, even if they’re a real business trying to reach you. Your email provider’s filter is erring on the side of caution.
  • You’ve never interacted with emails from that sender before. First-time senders face higher scrutiny, especially if their message happens to contain language or formatting that resembles spam patterns.
  • The sender’s domain or IP address got caught up in a larger spam campaign, even if this particular sender isn’t responsible for it. Shared hosting environments mean one bad actor can affect hundreds of legitimate senders.
  • Your own past behavior trained the filter. If you’ve previously deleted messages from similar senders without opening them, or if you’ve marked messages from this category as spam before, the filter learns to automatically route similar mail away from your inbox.

You can help legitimate senders reach your inbox by whitelisting their addresses or adding them to your contacts. Most email platforms give you the option to mark a message as “not spam,” which helps retrain your personal filter. Checking your spam folder occasionally for false positives is worth the few minutes it takes.

When to Escalate Beyond the Report Button

Most spam just needs to be reported through your email platform and forgotten. But some situations require additional action.

Real phishing attempts that ask for credentials, financial information, or try to get you to click on malicious links should go to specialized reporting channels:

Business email compromise attempts, where someone tries to impersonate executives or manipulate employees into transferring money or sharing sensitive data, should go immediately to your IT and security teams. These attacks are increasingly sophisticated. Your report might be the first indication that your organization is being targeted.

You can also sign up for SpamCop.net’s free spam reporting tool, which handles the technical work of reporting spam for you. After registering with your email address, you just forward unwanted messages to SpamCop, which in turn reads the email, identifies the internet service provider hosting the spammer, and sends a warning report on your behalf. Your reports also feed into SpamCop’s blocking list, which helps filter spam across the wider internet.

A few notes to keep you on the right side of their rules: only report email that is genuinely unsolicited and bulk, since misuse can get your access permanently revoked, and know that any replies forwarded back to you through SpamCop are not themselves spam.

What to Do With a Suspicious Email 

Here’s a simple framework for deciding what to do with suspicious email.

If it’s phishing for credentials or money, report it through your email platform and forward it to the appropriate authority. If someone is spoofing your domain and sending spam that appears to come from you, take immediate action following the steps in the spoofing section above. If it’s just an annoying marketing email, report it to train your filter and then forget about it. If your own legitimate emails are landing in spam folders, focus on the technical and behavioral factors that affect deliverability.

Everything else is probably already handled by your email provider’s automation.