The fastest way to stop unwanted emails

The simplest method is to use your email provider's built-in blocking tools. Gmail, Outlook, Yahoo Mail, and Apple Mail all let you select an email and click a block or spam button — usually a trash icon or three-dot menu. When you block a sender, their future emails go straight to spam automatically, and you will not see them in your inbox.

Most email providers also let you create rules or filters that catch emails before they arrive. In Gmail, this is called a filter. In Outlook, it is a rule. You can set these to automatically delete, archive, or send to spam any message from a specific address, or any message containing certain words in the subject line. This works even if the sender keeps changing their address slightly.

If you are drowning in unwanted mail, start by blocking the top five senders today. Then set up one filter for the category that bothers you most — like promotional emails with "limited time" in the subject, or messages from a particular domain. One filter often catches dozens of emails you have not even seen yet.

Key Takeaways

  • Every major email provider has a block button in the message menu that sends future emails from that sender to spam automatically.
  • Filters and rules let you catch unwanted emails before they reach your inbox by matching sender addresses or words in the subject line.
  • Unsubscribe links at the bottom of marketing emails are legitimate and usually work, but only if the sender is a real business.
  • Never reply to or click links in emails from unknown senders, as this confirms your address is active and often makes spam worse.
  • If unwanted emails come from a spoofed address (pretending to be from your bank or a company you know), report it as phishing rather than spam.

How to block a sender in Gmail

Open the email from the sender you want to block. Click the three-dot menu icon in the top right of the message. Select "Block [sender name]" from the dropdown. Gmail will move that email and all future messages from that address to your spam folder automatically.

To check what you have blocked, go to Settings (the gear icon in the top right), then Filters and Blocked Addresses. You will see a list of every address you have blocked. You can unblock anyone from this list if you change your mind.

How to block a sender in Outlook

Right-click the email you want to block, or click the three-dot menu if you are on the web version. Select "Junk" and then "Block Sender." Outlook will send that sender's future emails to your junk folder.

To see your blocked senders list in Outlook on the web, go to Settings, then Mail, then Junk Email. You can add addresses manually here or remove anyone you have blocked before.

Creating filters to catch patterns of unwanted mail

Filters are more powerful than blocking a single sender because they can match patterns. In Gmail, open an email from the type of sender you want to filter. Click the three-dot menu and select "Filter messages like these." Gmail will show you options: you can filter by sender address, subject line keywords, or words in the message body. Choose what matches the unwanted emails, then decide what happens to them — delete, archive, or send to spam.

In Outlook on the web, go to Settings, then Mail, then Rules. Click "Add new rule" and enter a condition (like "from [address]" or "subject contains [word]"). Then choose an action, such as "move to folder" or "delete." You can create multiple rules to handle different types of unwanted mail.

A well-built filter catches mail you have not even opened yet. For example, if you keep getting emails with "congratulations you won" in the subject, create a filter that deletes anything with those words. One rule can eliminate hundreds of similar messages.

Using unsubscribe links and marking as spam

Legitimate marketing emails — from retailers, newsletters, or services you once signed up for — usually have an unsubscribe link at the very bottom. Clicking it removes you from that sender's mailing list. This works because the sender is a real business that wants to follow email laws.

Unsubscribe links are safe to click if the email looks like it came from a real company. However, if the email is clearly spam (broken English, suspicious offers, or pretending to be from your bank), do not click the link. Instead, mark it as spam or phishing. Clicking a link in a scam email confirms your address is active and can make spam worse.

If you unsubscribe and keep getting emails from the same sender, that sender is breaking the law. Report it as spam and block them instead.

What to do about spoofed emails and phishing

Some unwanted emails pretend to come from your bank, PayPal, Amazon, or another company you trust. These are called spoofed emails, and they are usually phishing attempts designed to steal your password or payment information. Do not click any links or read any attachments.

Instead of blocking these, report them as phishing. In Gmail, click the three-dot menu and select "Report phishing." In Outlook, click the three-dot menu and select "Report" then "Report phishing message." This tells your email provider to investigate and helps protect other users. You can also forward the email to the real company — for example, forward fake Amazon emails to stop-spoofing@amazon.com.

After reporting, you can delete the email or move it to spam. Blocking the sender address is less useful here because scammers change addresses frequently, but reporting helps your provider catch the pattern.

Managing mailing lists and promotional email

If you signed up for a service and now receive too many promotional emails, you have three options: unsubscribe, filter, or block. Unsubscribe works if you never want to hear from them again. Filtering works if you want to keep the emails but have them skip your inbox — for example, you might filter all emails from a retailer to a folder you check once a week.

Some email providers let you use a separate email address for signups and shopping. Gmail users can add a plus sign and a label to their address — for example, james+shopping@gmail.com — and then filter all mail to that variant into a folder. This keeps promotional mail separate from personal messages without blocking the sender entirely.

Frequently Asked Questions

Will blocking someone know that I blocked them?

No. When you block a sender, their emails straightforward go to spam. They receive no notification that you blocked them. However, if they send you a message and it bounces back, they may realize something is wrong — but this is rare.

Can I block emails by subject line or keyword without blocking the sender?

Yes, use a filter instead of blocking. In Gmail or Outlook, create a filter that matches keywords like "limited time offer" or "click here now" and sends those emails to spam. This catches unwanted messages even if they come from different senders.

What if I blocked someone by mistake?

You can unblock them. In Gmail, go to Settings, then Filters and Blocked Addresses, find the sender, and click Unblock. In Outlook, go to Settings, Mail, Junk Email, and remove them from the blocked list. Future emails from them will go to your inbox again.

Do I need to unsubscribe before blocking?

No. Blocking is faster and works when ready. Unsubscribing is only necessary if you want to stay on the mailing list but receive fewer emails, or if you want to be removed from a legitimate business's records for privacy reasons.

Why do I keep getting emails from the same sender after blocking them?

The sender may be using a different email address each time. If this happens, check whether the emails are spoofed or phishing attempts — if so, report them as phishing. If they are legitimate but from slightly different addresses, create a filter that matches part of the address or a keyword in the subject line instead of blocking individual senders.