The fastest way to stop spam emails from reaching your inbox

The simplest method is to use your email provider's built-in block feature. In Gmail, right-click the spam message and select "Block [sender]" — future emails from that address go straight to spam. In Outlook, select the message, click the trash icon, then choose "Block Sender" from the dropdown. In Apple Mail on Mac, select the message and go to Mail > Junk Mail > Mark as Junk. On iPhone or iPad, swipe left on the message and tap the trash icon, then tap "Report Junk" before deleting.

These built-in blocks work when ready and require no settings changes. The email provider learns from your action and may filter similar messages automatically. However, spammers often use new addresses, so blocking one sender stops only that specific address — not the spam campaign itself.

Key Takeaways

  • Your email provider has a one-click block button in every email app; use it on every spam message you receive.
  • Marking messages as junk teaches your provider's filter to catch similar emails, which works better than blocking alone.
  • Never reply to spam, click unsubscribe links, or confirm your address is real — these actions increase the spam you receive.
  • Filters and rules let you automatically delete or sort emails from specific senders or containing certain words before they reach your inbox.
  • Creating a separate email address for online shopping and signups keeps your main inbox cleaner than blocking can.

How to mark emails as junk instead of just blocking

Marking as junk is more powerful than blocking because it trains your email provider's filter. When you mark a message as junk, the system analyzes it for patterns — sender address, subject line, links, images — and learns to catch similar messages automatically. Over time, this catches spam you have not seen yet.

In Gmail, click the spam icon (looks like a prohibition sign) above the message. In Outlook, click the junk icon in the toolbar. In Apple Mail, go to Mail > Junk Mail > Mark as Junk. After you mark a message, your provider moves it to the spam or junk folder and remembers the sender. Do this for every spam message, even if you have already blocked the sender — the junk marking teaches the filter more than the block does.

Creating filters and rules to sort emails automatically

Filters let you automatically move, delete, or label emails before they reach your inbox. This works for senders you do not want to block entirely but also do not want to see — newsletters you signed up for but no longer read, or emails from a work project that ended.

In Gmail: Open an email from the sender you want to filter. Click the three-dot menu and select "Filter messages like these." Choose what to do: skip the inbox (send to a label), delete automatically, or mark as read. Click "Create filter." From then on, every email matching those rules bypasses your inbox.

In Outlook: Go to Settings > Mail > Rules. Click "Add new rule." Name the rule, then set the condition — for example, "From [sender address]" — and the action, such as "Move to Junk" or "Delete." Click "Save." Outlook applies the rule to new messages only, not old ones.

In Apple Mail on Mac: Go to Mail > Preferences > Rules. Click "Add Rule." Set the condition (sender, subject, or content) and action (move to a mailbox, delete, or mark as junk). Click "OK." On iPhone or iPad, Mail does not have a rules feature, so use blocking and junk marking instead.

Why you should never reply to or unsubscribe from spam

Replying to spam or clicking an unsubscribe link confirms your email address is real and monitored. Spammers use this confirmation to add you to more lists or sell your address to other spammers. Even if the unsubscribe link looks legitimate, clicking it tells the sender your address works.

The only exception is a newsletter or marketing email from a company you recognize and have done business with. Those unsubscribe links are usually real. But for unsolicited emails from unknown senders, block or mark as junk and move on. Never reply, even to say "stop sending me emails" — that reply proves the address is active.

Using a separate email address for shopping and signups

Your main email address accumulates spam over time because websites sell or leak your address. A practical long-term solution is to use a second email address for online shopping, social media signups, and any website that asks for your email. Keep your primary address for people and services you trust.

Gmail and Outlook both let you create multiple accounts for free. Use your main address only for personal contacts, work, and services you pay for. Use the secondary address for everything else. When the secondary address fills with spam, you can ignore it or delete it and create a new one. This keeps your primary inbox clean without constant blocking and filtering.

What to do if spam is coming from a hacked account

Sometimes spam comes from a real person's email address — a friend, colleague, or family member whose account has been compromised. The sender is not the person whose name appears; their account has been taken over by a spammer.

Block the address as you would any spam, but also contact the real person through another method — a phone call, text message, or different email address — and let them know their account is sending spam. They should change their password when ready and run antivirus software on their computer. Do not click any links in these emails, even if they appear to come from someone you know.

Reducing spam before it starts

You cannot prevent all spam, but you can slow its growth. When you sign up for a website, look for a checkbox that says "Send me promotional emails" or "Subscribe to our newsletter" — uncheck it before you finish. Many websites check this box by default, so you have to actively uncheck it.

Avoid posting your email address publicly on websites, social media, or forums. Spammers use automated tools to scrape email addresses from public pages. If you must post your address, write it as "name at domain dot com" instead of the actual address. Use a temporary or disposable email service when you need to sign up for something you do not trust — services like Temp Mail or 10 Minute Mail give you a working address that expires after a set time.

Frequently Asked Questions

Does blocking a sender stop all their emails?

Blocking stops emails from that specific address, but spammers often use new addresses for each campaign. Blocking is most useful for legitimate senders you want to ignore. For true spam, marking as junk teaches your filter to catch similar messages, which is more effective than blocking alone.

Can I recover emails I accidentally marked as junk?

Yes. In Gmail, go to the All Mail label and search for the sender, then move the message back to your inbox. In Outlook, open the Junk folder, find the message, right-click it, and select "Mark as Not Junk." In Apple Mail, go to the Junk mailbox, select the message, and click the junk icon again to move it back.

What if I block someone but they keep emailing from different addresses?

Create a filter instead of blocking individual addresses. Set the filter to catch emails containing the person's name, a specific phrase they always use, or a domain they control. This catches new addresses they create without you having to block each one manually.

Is it safe to click unsubscribe on emails from big companies?

Yes, if you recognize the company and have done business with them. Unsubscribe links from Amazon, banks, or retailers you use are legitimate. But if you do not recognize the sender or never signed up for their list, do not click unsubscribe — mark it as junk instead.

Will marking emails as junk improve my filter over time?

Yes. Email providers use machine learning to improve their filters based on what users mark as junk. The more messages you mark, the better your provider learns what spam looks like for your account. This is why marking as junk is more effective than blocking alone.