How to Stop Spam Emails: 9 Ways That Actually Work

Nobody signs up for spam, yet the average inbox collects dozens of junk messages a week — fake delivery notices, miracle offers, newsletters you never asked for, and outright scams. The good news: you cannot stop spam from being sent, but you can stop almost all of it from reaching you.

Here is how to stop spam emails, starting with the moves that make the biggest difference in the first ten minutes.

First, Understand Why You Get Spam

Your email address is valuable, and it leaks out in predictable ways: signing up for websites and freebies, online shopping checkouts, data breaches at companies that stored your details, and address lists that get bought and sold between marketers. Some spammers even generate addresses automatically and blast millions of combinations, knowing a fraction will land.

That is why there is no single switch. The fix is a combination: train your mail service to catch more, block the repeat offenders, and stop your address from spreading further.

1. Mark Spam as Spam — Every Time

The single most effective habit costs two seconds: when a junk message lands in your inbox, mark it as spam or junk instead of just deleting it.

Deleting only removes that one message. Marking it teaches your provider’s filter what this sender and this kind of message look like, so similar mail gets diverted automatically in future — for you, and often for everyone else on the service too. Filters genuinely learn from this feedback, and people who report consistently see noticeably cleaner inboxes within a few weeks.

2. Know When NOT to Unsubscribe

Every legitimate company email carries an unsubscribe link, and for brands you recognise — a shop you bought from, a newsletter you actually signed up for — using it is safe and effective. Reputable senders are required to honour it.

But for unknown, suspicious spam, never click unsubscribe. That link does not remove you; it confirms to the spammer that your address is real and actively read, which makes your address more valuable and usually brings more spam. The same goes for replying, even to say “stop” — any response proves a human is there.

The rule is simple: recognised sender → unsubscribe is fine. Stranger → mark as spam, never interact.

3. Block Persistent Senders

Some senders slip through filters repeatedly because they send from a consistent address. Every major mail service — Gmail, Outlook, Yahoo, Apple Mail — lets you block a specific address so its messages never reach your inbox again.

Blocking is best reserved for the repeat offenders: the same “company” emailing daily despite being marked as spam, or a real business that ignores your unsubscribe request. It takes a few seconds in the message options (usually under the three-dot menu) and it is permanent.

4. Set Up Filters for the Patterns

Filters (called “rules” in some services) automatically sort incoming mail. Two or three well-chosen filters catch a surprising amount of junk:

• Keyword filters. Route messages containing typical spam phrases — “you’ve won”, “crypto giveaway”, “verify your account now” — straight to spam or trash.
• Sender filters. Send everything from a bulk-marketing domain you do not care about to a “Promotions”-style folder, or delete it outright.
• Newsletter filters. Keep real newsletters, but out of the inbox: filter by sender into a “Read later” folder so your inbox stays for people, not broadcasts.

Set filters up once and they quietly work on every future message.

5. Check Links Before You Ever Click

The most dangerous spam is not annoying — it is phishing: messages designed to look like your bank, a courier, or a tax office, pushing you to click and enter details on a fake page.

Before clicking anything in an unexpected email, hover over the link (or press and hold on a phone) and look at the real address it leads to. A message claiming to be from your bank that links to a strange domain with a jumbled name is fake, full stop. Our plain-English guide to what a URL is and how its parts work shows exactly how to read an address and spot the tricks — it takes two minutes and permanently sharpens your eye for scams.

When in doubt, do not use the email’s link at all. Open the company’s real website or app yourself and check there.

6. Use a Second Email Address for Signups

Most spam arrives because an address was handed out too freely. A simple, lasting defence is to split your email life in two:

• Main address — for banking, work, family, and services that matter. Give it out rarely.
• Signup address — a second, free mailbox for shops, forums, freebies, competitions, and anything that demands an email before showing you a price.

All the marketing noise lands in the second inbox, which you check only when you need a receipt or a discount code. Your main inbox stays clean by design, not by effort.

A lighter version of the same trick: many providers support “plus addressing”. Adding a tag like [email protected] still delivers to you, but lets you see exactly which site leaked or sold your address — and filter that tag straight to trash.

7. Check Whether Your Address Was in a Data Breach

If spam suddenly increased, your address may have been exposed in a breach at a company you used. Free breach-check services let you enter your email and see which known breaches included it.

If you find hits, do three things: change the password on any account that shares the breached one (and stop reusing passwords), turn on two-factor authentication for your important accounts, and expect a wave of phishing attempts pretending to be the breached company — see way 5.

8. Turn Your Spam Filter Up

Most mail services let you adjust how aggressive the filter is. In Gmail, for example, you can create a filter for your own address and choose stronger handling; Outlook offers junk-email protection levels; Apple Mail has its own junk settings. If large amounts of obvious junk are still landing in your inbox rather than the spam folder, look for the strictest sensible setting.

One caution: the strictest settings occasionally catch a real message. Check your spam folder once a week or so for anything legitimate that got swept up, and mark it “not spam” so the filter learns.

9. Protect the Address You Have Left

Finally, slow the leak at the source:

• Do not post your email publicly — not in forum posts, comments, or social profiles, where scrapers harvest addresses automatically.
• Read the tick-boxes at checkout. Many forms pre-tick “send me offers from partners”. Untick them.
• Be stingy with freebies. “Free” PDFs, prize draws, and quizzes often exist mainly to collect addresses. If it asks for your email, assume the email is the product.
• Do not forward chain emails or enter friends’ addresses into “invite” features — that spreads everyone’s address, not just yours.

How Long Until It Gets Better?

Marking spam and blocking senders improves things within days, and most people see a major difference in two to four weeks as filters learn their patterns. The second-inbox habit stops the problem growing back. Spam will never reach absolute zero — spammers constantly change tactics — but a well-kept inbox typically sees only the occasional stray instead of a daily flood.

Frequently Asked Questions

Does unsubscribing from spam actually work?
For legitimate companies, yes — they are required to remove you and generally do. For unknown or suspicious senders, no: clicking only confirms your address is active. Mark those as spam instead.

Why do I suddenly get so much spam?
The usual causes are a data breach that included your address, a signup that shared it with marketing partners, or your address being posted somewhere public. A sudden wave after a breach is very common.

Is spam email illegal?
In many countries, commercial email is regulated — in the US, the CAN-SPAM Act requires honest subject lines, a real postal address, and a working unsubscribe for legitimate marketing mail. True scam spam ignores all of this, which is one way to recognise it.

Should I just get a new email address?
Only as a last resort — changing addresses everywhere is painful, and a new address fills up too if the same habits continue. Clean up the current one first with the steps above; most people find that is enough.

Can I stop spam on my phone the same way?
Yes. Phone mail apps use the same accounts and the same filters, so everything you set up — marking spam, blocking, filters, the second address — protects your phone inbox too.