The fastest way to reduce spam is to stop it at your email provider's filter
Most spam never reaches your inbox because Gmail, Outlook, Yahoo, and other major providers filter it automatically. But their filters are not perfect, and some spam gets through. The quickest fix is to mark those messages as spam or junk — this trains your provider's filter to catch similar messages in the future.
In Gmail, open the message, click the three dots in the top right, and select "Report spam". In Outlook, right-click the message and choose "Junk" then "Block Sender". In Yahoo Mail, click the three dots and select "Mark as spam". Each time you do this, your provider learns a little more about what you do not want to see.
If spam is overwhelming, check your provider's settings for a stronger filter. Gmail has a "Block all" option under the three-dot menu. Outlook lets you move messages to junk automatically based on sender or subject line. These settings are usually in your email account's Settings or Preferences section, under Filters, Rules, or Junk Mail.
Key Takeaways
- Mark spam messages as junk in your email provider — this trains the filter to catch similar messages automatically.
- Unsubscribe from legitimate marketing emails using the link at the bottom of the message, which stops future emails from that sender.
- Never reply to spam, click links in spam, or confirm your email address is real, because this tells spammers your address is active.
- Use a separate email address for online shopping, signups, and forms to keep your main inbox cleaner.
- Do not post your email address publicly on websites, social media, or forums where automated tools can harvest it.
Unsubscribe from marketing emails you actually signed up for
Spam and unwanted marketing emails are different things. Spam is unsolicited and often fraudulent. Marketing emails are messages from companies you gave your address to — even if you do not remember doing it. Most marketing emails have an "Unsubscribe" link at the very bottom of the message, usually in small gray text.
Click that link and you will usually land on a page where you can confirm you want to stop receiving emails from that sender. This works because legitimate companies are required by law to honor unsubscribe requests. After you unsubscribe, it can take a few days for the emails to stop, but they should stop.
If you see an unsubscribe link but it does not work, or if you cannot find one, the sender is probably not a legitimate business. Do not reply to the email or click any other links — that confirms your address is real and active, which makes you a target for more spam.
Stop giving your email address to every website and form
Every time you enter your email address into a website, a signup form, or a store checkout, that address goes into a database. Some of those databases are sold, hacked, or shared with marketing partners. Over time, your address ends up on dozens of mailing lists.
The simplest way to prevent this is to use a separate email address for online shopping, newsletter signups, and forms. Keep your main email address for people and services you actually trust. Many email providers let you create multiple addresses for free — Gmail calls them "aliases", Outlook calls them "additional addresses", and Yahoo lets you create "secondary accounts".
If you want to go further, you can use a temporary or masked email service like SimpleLogin, Hide My Email (built into iCloud), or Temp Mail. These services give you a throwaway address that forwards to your real inbox, or that you can delete after a few days. This keeps your actual email address off mailing lists entirely.
Never respond to or engage with spam
Spammers use automated tools to send millions of emails at once. They do not know which addresses are real — they just guess. When you reply to spam, click a link in it, or confirm your address in any way, you tell the spammer your address is active and worth targeting again.
This is why the worst thing you can do is click "Unsubscribe" on a spam email that did not come from a real company. If the sender is a scammer, clicking that link confirms your address works. Legitimate companies put unsubscribe links in their emails because they have to. Spammers do not.
The same rule applies to emails that say "Reply STOP to unsubscribe" or ask you to confirm your address. Do not do it. The only safe action with true spam is to mark it as spam in your email provider and delete it.
Be careful where you post your email address online
Automated tools called "email harvesters" scan websites, forums, social media, and public directories looking for email addresses. If you post your address publicly anywhere, these tools will find it and add it to spam lists.
If you need to share your email address on a website you control, you can write it in a way that humans can read but bots cannot — for example, "contact me at james [at] example [dot] com" instead of "james@example.com". Some websites also let you display your email only to logged-in users, which keeps it hidden from scrapers.
On social media, keep your email address private in your profile settings. On forums and public comment sections, do not include your email in your username or profile. If someone needs to reach you, they can usually send you a private message instead.
Use your email provider's advanced filtering options
Beyond marking messages as spam, most email providers let you create custom rules to filter mail automatically. These rules can move messages to a folder, delete them, or flag them based on the sender's address, subject line, or words in the message body.
In Gmail, go to Settings, then Filters and Blocked Addresses, and click "Create a new filter". You can tell Gmail to automatically delete or archive messages from a specific sender, or messages containing certain words. In Outlook, go to Settings, then Mail, then Rules, and create a rule to move messages to junk based on sender or subject.
If you get a lot of email from a particular domain or sender, you can block them entirely. In Gmail, open a message from that sender, click the three dots, and select "Block [sender name]". In Outlook, right-click and choose "Junk" then "Block Sender". Blocked senders' messages go straight to junk and never appear in your inbox.
Consider a new email address if spam is out of control
If your current email address receives so much spam that filtering does not help, starting over with a new address is sometimes faster than trying to clean up the old one. This works because spam lists are usually not updated — if you stop using an address, spammers will eventually stop sending to it.
Before you switch, think about where your address is used. You will need to update it with your bank, email contacts, work, and any services you log into regularly. For less important accounts — old shopping sites, forums you no longer visit, newsletters you do not read — you can usually just leave them alone.
When you create your new address, use the strategies above from the start: use a separate address for signups and shopping, do not post it publicly, and mark spam as junk when ready. This keeps the new address cleaner than the old one ever was.
Frequently Asked Questions
Is it safe to click "Unsubscribe" on emails I do not recognize?
Only if the email looks like it came from a real company — a store you shop at, a service you use, or a newsletter you might have signed up for. If the sender is unknown or the email looks suspicious, do not click anything. Mark it as spam instead. Clicking unsubscribe on a scam email tells the scammer your address is real.
Why do I get spam if I never gave anyone my email address?
Your address may have been in a data breach from a website or service you used. It may have been sold by a company that collected it legally. Or it may have been guessed — spammers use software to generate common email address patterns and send to thousands at once. Marking these as spam and using filters will reduce them over time.
Will changing my email settings stop all spam?
No email filter catches everything, and new spam arrives constantly. But marking messages as spam, unsubscribing from legitimate senders, and using filters will reduce spam significantly. The goal is to get your inbox manageable, not spam-free.
Can I report spam to anyone besides my email provider?
You can report phishing emails and scams to the Federal Trade Commission at reportfraud.ftc.gov. If an email claims to be from your bank or a government agency but looks fake, you can also report it directly to that organization. But for regular marketing spam, your email provider's spam filter is your best tool.
What should I do if spam is coming from my own email address?
This usually means your account has been compromised or your address is being spoofed — used as a fake sender address by someone else. If you think your account is hacked, change your password when ready and check your forwarding settings to make sure no one is redirecting your mail. If your address is just being spoofed, there is not much you can do, but mark those emails as spam so your provider learns to filter them.