The fastest way to block a spam email

Open the email, look for a button or menu option labeled "Block," "Block Sender," or "Report Spam" — the exact wording depends on which email service you use. Click it. That sender's future emails will either go straight to your spam folder or be deleted automatically, depending on your settings.

Gmail, Outlook, Yahoo Mail, and Apple Mail all have this button in slightly different places, but the result is the same: the sender's address gets added to your blocked list. You will not see their emails in your inbox anymore.

If you cannot find the button in your email app, you can also right-click or long-press the sender's name and look for "Block" or "Report Spam" in the menu that appears.

Key Takeaways

  • Every major email service has a built-in block feature that sends future emails from that sender to spam or deletes them automatically.
  • Blocking works best for emails from a single sender; if spam comes from many different addresses, filters and rules catch more of it.
  • Reporting spam to your email provider helps train their filters to catch similar messages for all users, not just you.
  • Unsubscribe links in legitimate marketing emails work, but only use them for emails you recognize — spam senders often use fake unsubscribe links to confirm your address is active.

Where to find the block button in each email service

Gmail: Open the email. Click the three dots (more options) in the top right. Select "Block [sender name]." The sender will be moved to spam and their future emails will skip your inbox.

Outlook (web and desktop): Open the email. Click the three dots in the top right. Choose "Block" or "Junk" depending on your version. You can also right-click the sender's name and select "Block Sender."

Yahoo Mail: Open the email. Click the three dots. Select "Block Sender." Yahoo will move the sender to your blocked list.

Apple Mail (on Mac, iPhone, iPad): Open the email. Click the sender's name at the top, then click the down arrow next to their address. Select "Block This Contact." On iPhone or iPad, swipe left on the email and tap the block icon (usually a circle with a slash).

The difference between blocking and reporting spam

Blocking stops one sender from reaching your inbox. It is personal — only your future emails from that address are affected. Use this when you know exactly who is sending unwanted mail and you want them gone.

Reporting spam tells your email provider that a message is spam. The provider uses this information to improve their filters for everyone. When you report spam, the email usually goes to your spam folder and the sender may be flagged in the system. Report spam when you do not recognize the sender or when the email looks like a phishing attempt or scam.

Most email services let you do both at once — block the sender and report the email as spam in a single action. This is usually the safest choice for unsolicited emails.

When blocking does not work well

Blocking works for emails from a single address, but spammers often send from many different addresses. If you are getting spam from dozens of different senders, blocking each one individually will take forever and new addresses will keep arriving.

In that case, use filters or rules instead. These let you catch emails based on keywords, sender domain, or subject line patterns. For example, you can create a rule that sends any email with "Congratulations, you won!" straight to spam, even if it comes from a new address each time. Most email services include this feature for free.

If spam is coming from a domain (like all emails ending in @spamcompany.com), you can often block the entire domain at once rather than individual addresses. Check your email settings under "Blocked Senders" or "Filters" to see if this option is available.

Should you use the unsubscribe link?

Legitimate marketing emails — from stores, newsletters, or services you signed up for — usually have a real unsubscribe link at the bottom. Clicking it removes you from their mailing list. This works and is often faster than blocking.

Do not click unsubscribe on emails from senders you do not recognize. Spammers use fake unsubscribe links to confirm that your email address is active and monitored. Clicking the link tells them your address is good, and you will receive more spam, not less.

The safest rule: if you recognize the company or service, unsubscribe. If you do not recognize the sender, block or report as spam instead.

What happens after you block someone

Once you block a sender, their emails will not appear in your inbox. Where they go depends on your email service: Gmail and Outlook usually send them to spam, while some services delete them entirely. You can usually see a list of blocked senders in your email settings if you need to unblock someone later.

Blocking is not permanent. If you change your mind, you can find the sender in your blocked list and remove them. This is useful if you blocked someone by accident or if a legitimate sender's email address was spoofed by a spammer.

The person you blocked will not be notified. They will not see a message saying they are blocked. Their emails will straightforward disappear from your inbox without a bounce-back or delivery failure notice on their end.

Preventing spam before it reaches your inbox

Blocking and reporting handle spam that has already arrived. To reduce how much spam you receive in the first place, avoid posting your email address publicly online, use a separate email address for online shopping or signups, and be cautious about which websites you trust with your address.

Most email services also have automatic spam filters that catch obvious spam before it reaches your inbox. These filters improve over time as you report spam and block senders. The more you report, the better the filter learns what you consider unwanted.

If you are receiving a lot of spam, check whether your email address has been exposed in a data breach. Websites like Have I Been Pwned let you search your address for free to see if it appeared in a known breach. If it has, that explains the spike in spam.

Frequently Asked Questions

Can I block an entire email domain instead of just one address?

Yes, most email services let you block domains. In Gmail, you can create a filter that catches all emails from a domain and sends them to spam. In Outlook, you can add a domain to your blocked senders list. Check your email settings under "Filters," "Rules," or "Blocked Senders" to see the exact steps for your service.

What if someone is harassing me through email?

Block them first. Then, if the harassment continues from new addresses or escalates, save the emails as evidence and contact your email provider's abuse team. For serious threats, contact local law enforcement. Most email services have a process for reporting harassment beyond straightforward spam.

If I block someone, can they tell I blocked them?

No. They will not receive a notification, and their emails will not bounce back to them. From their perspective, their emails are straightforward not reaching you — they have no way to know whether you blocked them, marked them as spam, or if the email just failed to deliver.

Can I block emails by subject line or keyword instead of by sender?

Yes, using filters or rules. Most email services let you create a rule that catches emails with specific words in the subject line or body and sends them to spam automatically. This is more powerful than blocking because it catches spam from any sender using those keywords.

What should I do if I blocked someone by mistake?

Go to your email settings and find your blocked senders list (usually under "Filters," "Rules," or "Blocked Contacts"). Find the sender you want to unblock and remove them from the list. They will be able to email you normally again.