The fastest way to stop spam: use your email provider's built-in filters
Every major email service — Gmail, Outlook, Yahoo Mail — has a spam filter that runs automatically. You do not have to set it up. The filter learns from what you mark as spam, so the more you report junk messages, the better it gets at catching similar ones.
To report spam in Gmail, click the message, then click the trash icon and select "Report spam". In Outlook, right-click the message and choose "Junk" then "Block". In Yahoo Mail, click the spam icon at the top of the message. Each time you report, the filter updates and catches more like it.
If spam is already filling your inbox before the filter catches it, move to the next step. But if you are only getting a few unwanted messages a week, reporting them as spam is usually enough — the filter will handle the rest without you doing anything else.
Key Takeaways
- Report spam messages to your email provider so the filter learns what you do not want to see.
- Create email-specific rules to automatically delete or sort messages from certain senders or with certain words in the subject line.
- Use the block feature to prevent a specific sender from reaching you again, though this does not stop new addresses from the same person.
- Never reply to spam, click links in spam, or confirm your email address — these actions tell spammers your address is active and worth targeting.
- Unsubscribe links in legitimate marketing emails work, but unsubscribing from actual spam often makes it worse.
Block individual senders so their messages never arrive
If the same person or company keeps sending you unwanted mail, blocking stops it at the source. In Gmail, open the message, click the three dots at the top right, and select "Block [sender]". In Outlook, right-click and choose "Junk" then "Block Sender". In Yahoo Mail, click the spam icon and select "Block Sender".
Blocking works when ready — that sender's future messages go straight to spam or are rejected. The catch is that a spammer can create a new email address in seconds, so blocking one address does not stop them from reaching you under a different name. Blocking is most useful for people you actually know but do not want to hear from, or for legitimate companies whose emails you no longer want.
Create rules to automatically sort or delete messages by sender or subject
Rules let you set conditions: if a message comes from a certain address or contains certain words, move it to a folder, delete it, or mark it as read automatically. Rules catch spam that the filter misses and work on patterns, not just individual senders.
In Gmail, go to Settings, then Filters and Blocked Addresses, then Create a New Filter. Type the sender's address or a word that appears in the subject line (like "viagra" or "weight loss"). Choose what happens to matching messages — archive, delete, or move to a folder. In Outlook, go to Settings, then Mail, then Rules, then Add Rule. In Yahoo Mail, go to Settings, then Filters, then Add Filter. Each service works the same way: you describe what to look for, and what to do when you find it.
Rules are powerful because they work on patterns. If all your spam mentions "limited time" in the subject, one rule catches all of it. If spam always comes from addresses ending in a certain domain, one rule blocks the whole domain.
Unsubscribe from legitimate marketing emails, not actual spam
Legitimate companies — retailers, newsletters, services you signed up for — include an unsubscribe link at the bottom of their emails. Clicking it removes you from their mailing list. This works and is safe to do.
Actual spam does not have a real unsubscribe link, or the link is fake. Clicking it tells the spammer your address is active and monitored, which makes you a more valuable target. They will sell your address or spam you more. Never click unsubscribe on messages you did not sign up for. Report them as spam instead.
The difference is usually obvious: a real unsubscribe link takes you to a page where you confirm you want to leave the list. A fake one either does nothing, takes you to a suspicious website, or asks you to reply to confirm — legitimate companies never ask you to reply to unsubscribe.
Do not reply to spam or click links, even to unsubscribe
Replying to spam, clicking any link in it, or confirming your email address tells spammers that a real person is reading their messages. Your address becomes more valuable and gets sold to other spammers or used more aggressively by the same one.
This is true even if you are replying to tell them to stop. Even if you are clicking an unsubscribe link that looks real. If you did not sign up for the mailing list, do not interact with the message at all — report it and move on. The only safe action is reporting it as spam or deleting it.
Use a separate email address for shopping and signups to protect your main inbox
Many people create a second email address just for online shopping, free trials, and website signups. This keeps marketing emails and spam away from your main address, which you give only to people and services you trust.
You can use a free Gmail, Outlook, or Yahoo account as your "junk" address. Check it once a week or once a month if you need to find a receipt or confirmation email. Your primary address stays clean because it is not on mailing lists or sold to marketers.
This is not foolproof — spammers still find secondary addresses — but it reduces the volume significantly. It also makes it easier to spot real spam: if your secondary address gets a message from your bank, that is suspicious and probably phishing.
Recognize phishing emails so you do not fall for them
Phishing emails pretend to be from your bank, PayPal, Amazon, or another service you use. They ask you to confirm your password, update your payment method, or verify your account. They look official but are designed to steal your login information.
Real companies never ask for passwords or sensitive information by email. If you get a message claiming to be from your bank asking you to click a link and log in, do not click it. Instead, go directly to the bank's website by typing the address yourself, or call the number on the back of your card. Report the email as spam or phishing.
Phishing emails often have small clues: a sender address that is close to but not exactly the real company's address, generic greetings like "Dear Customer" instead of your name, or urgent language telling you to act now. But some are very convincing, so when in doubt, contact the company directly using a phone number or website you know is real.
Frequently Asked Questions
Why do I still get spam even though I report it?
Spam filters learn over time, so new types of spam slip through at first. Keep reporting — the filter improves as it sees more examples. Also, spammers constantly change their tactics and sender addresses, so the filter is always playing catch-up. Rules help fill the gap by catching patterns the filter has not learned yet.
Is it safe to unsubscribe from emails I actually signed up for?
Yes, if you signed up for the mailing list. Legitimate companies honor unsubscribe requests and remove you within a few days. If you unsubscribe and keep getting emails from the same sender, report those as spam — that is a sign they are ignoring your request.
Can I block an entire domain so no one from that company can email me?
Yes, using rules. In Gmail, create a filter with the domain name (like *@spammydomain.com) and set it to delete or archive. In Outlook and Yahoo Mail, do the same in the rules section. This blocks everyone from that domain, so use it only if you are sure you will never need email from anyone there.
What should I do if a spammer is using my own email address as the sender?
This is a spoofed address — the spammer is faking the sender to make the email look like it came from you. You cannot stop them from doing this, but you can report the messages as spam and create a rule to catch them. Also, tell people who know you that your address may be spoofed, so they do not trust emails claiming to be from you that you did not send.
Will blocking someone prevent them from seeing my emails if I send to them?
No. Blocking only stops their messages from reaching you. If you send them an email, it arrives normally. Blocking is one-way — it protects your inbox, not theirs.