Spam

What Is Spam?

Spam is communication you didn’t ask for and didn’t agree to receive—such as emails, text messages, or phone calls—that are sent in bulk, often for advertising, promotion, or outreach. Spam is primarily defined by lack of consent, not by intent to steal, which is why not all spam is a scam.

It commonly appears as:

• Mass emails sent to large mailing lists
• Promotional text messages
• Automated robocalls
• Repeated messages from unknown senders

Spam is widespread because it’s inexpensive to send at scale, and even a small response rate can make it worthwhile for senders.

What Spam Looks Like in Real Life

Most people encounter spam in places where it’s expected.

Common examples include:

• Email spam folders, where promotional or suspicious messages are automatically filtered
• Promotional email tabs from businesses you don’t remember signing up for
• Robocalls or voicemail spam, often offering services or surveys
• Text message ads sent from unknown numbers

In many cases, built-in tools help reduce the impact of spam. Email providers, phone carriers, and devices routinely filter or label suspected spam so it never reaches your main inbox.

However, not all spam is caught automatically. Some messages still appear in regular inboxes or message threads, which is why it’s important to review unexpected messages carefully, especially if they include links, requests, or pressure to act.

Spam vs. Scam: What’s the Difference?

Although the terms are often used together, spam and scams are not the same thing.

• Spam is unwanted communication. It may be harmless advertising or mass messaging.
• Scams are deceptive schemes designed to trick you into sending money, sharing personal information, or giving access to accounts.

Some scams start as spam, but not all spam is a scam.

Why Spam Is So Common (and When It’s Illegal)

Spam is widespread because it is cheap, easy to send at scale, and not always illegal.

In many cases, spam consists of mass marketing messages that follow consumer protection rules, even if recipients didn’t ask for them. In the United States, laws such as the CAN-SPAM Act regulate certain types of commercial messages, especially email. When these rules are followed, spam may be unwanted but still legal.

Under CAN-SPAM and similar regulations, legitimate commercial messages are generally required to:

• Use accurate sender information and avoid misleading headers
• Clearly identify the message as advertising or promotional
• Provide a clear way to opt out of future messages, such as an unsubscribe link

Spam also persists because:

• Messages can be sent automatically and at massive scale
• Some spam is sent from outside the U.S., making enforcement difficult
• Filtering systems block most spam, but not all of it

When Spam Crosses the Line

While not all spam is inherently "bad" or malicious, spam becomes illegal or dangerous when it goes beyond unwanted advertising and into deception or fraud.

This can include messages that:

• Disguise or falsify the sender’s identity
• Impersonate trusted organizations or individuals
• Use deceptive links, fake websites, or misleading claims
• Ignore opt-out requests, unsubscribes, or required disclosures
• Are used to carry out scams such as phishing, smishing, or payment fraud

At that point, spam often overlaps with scam activity, which is illegal and reportable.

How to Reduce the Risk From Spam

• Don’t click links or respond to unexpected messages
• Use spam filters and call-blocking features when available
• Delete or ignore messages that feel irrelevant or suspicious
• Avoid sharing your phone number or email publicly when possible
• Never share passwords, verification codes, or payment details
• Use a free scam checker like Scamwise (scamwise.com) to review questionable messages before responding or acting

If a message pressures you to act immediately or take an action you're not expecting, it’s a good reason to pause.

FAQs

What is spam?
Spam is unsolicited or unwanted communication, such as emails, text messages, or phone calls, usually sent in bulk.

Is spam the same as a scam?
No. Spam is unwanted communication, while scams are designed to steal money, personal information, or account access.

Can spam turn into a scam?
Yes. Some spam messages contain links or prompts that lead to scams, which is why it’s important to be cautious.

Is spam illegal?
Not always. Some spam is legal advertising that follows consumer protection rules, while spam that involves deception, impersonation, or fraud may be illegal.

Should I respond to spam messages?
Usually no. Responding can confirm your contact information is active and may lead to more unwanted messages.