The fastest way depends on where the emails land

The method that works fastest depends on whether the sender is someone you know, whether the emails are going to your main inbox or spam folder, and which email service you use. Gmail, Outlook, and Yahoo each have slightly different tools, but all three let you block a sender, unsubscribe from mailing lists, or report the address as spam. If the person is someone you know personally or professionally, blocking them usually works better than reporting spam — it stops their emails without flagging their account to the email service.

Start by opening one email from the person you want to stop hearing from. Look for a block button, unsubscribe link, or three-dot menu. The exact location changes between services, but it is always on or near the email itself, not buried in settings. Blocking takes about 10 seconds and stops that sender's emails from reaching your inbox when ready.

Key Takeaways

  • Blocking a sender stops their emails from reaching your inbox, while unsubscribing removes you from a mailing list — use blocking for people you know and unsubscribe for newsletters or marketing emails.
  • Gmail's block button is in the three-dot menu at the top right of an email; Outlook and Yahoo have similar menus with block or junk options.
  • If someone keeps emailing you from different addresses after you block them, report the emails as spam or phishing so your email service learns the pattern.
  • Unsubscribe links at the bottom of marketing emails are usually legitimate and remove you from that sender's list within a few days.
  • Never reply to unwanted emails or click links in them — silence and blocking work better than telling the sender to stop.

How to block a sender in Gmail

Open any email from the person you want to block. In the top right corner of the email, click the three vertical dots (the menu icon). A dropdown menu appears with several options. Click "Block [sender's name]" — it is usually near the bottom of the menu.

Gmail will ask you to confirm. Click the button to confirm the block. From that moment on, all emails from that address go straight to your spam folder, and you will not see notifications for them. If the person emails you from a different address later, you can block that address the same way. Blocked emails stay in your spam folder for 30 days before Gmail deletes them automatically.

How to block a sender in Outlook or Microsoft 365

Open an email from the sender. Click the three dots at the top right of the email. Select "Junk" from the menu, then choose "Block Sender." Outlook moves that sender's future emails to your junk folder and stops showing you notifications.

If you use Outlook.com (the free web version), the menu location is the same. If you use Outlook as a desktop process on Windows or Mac, the block option is in the Home tab at the top of the window — look for "Junk" and then "Block Sender." Both versions work the same way once you confirm the block.

How to block a sender in Yahoo Mail

Open the email from the person you want to block. Click the three dots at the top right. Select "Block sender" from the menu. Yahoo when ready sends that sender's future emails to your spam folder.

Yahoo also lets you block a sender without opening their email. Hover over the sender's name in your inbox list, and a trash icon and three dots appear. Click the three dots and select "Block sender." This works the same way as blocking from inside the email.

When to unsubscribe instead of block

If the emails are from a company, newsletter, or mailing list — not a person sending you unwanted messages — look for an unsubscribe link instead of blocking. These links are almost always at the very bottom of the email, in small text. Click the link and follow the steps to remove yourself from that mailing list.

Unsubscribe is the right choice for marketing emails, promotional messages, or newsletters you signed up for but no longer want. It removes you from the sender's list entirely, so you stop receiving emails from that company. Blocking works too, but unsubscribing is cleaner because it tells the company's system you do not want their mail, rather than just hiding it in your spam folder.

Unsubscribe requests usually take effect within a few days. If you keep receiving emails from the same sender after unsubscribing, then block them — that signals the sender is ignoring unsubscribe requests.

What to do if someone keeps emailing you from different addresses

If you block someone and they email you from a new address, block that address too. After you block two or three addresses from the same person, report one of the emails as spam or phishing. Open the email, click the three dots, and select "Report spam" or "Report phishing." This tells your email service that the sender is using multiple addresses to get around your block.

Email services use these reports to identify patterns. If enough people report the same sender, the service may suspend or close their account. Do not reply to the emails or tell the sender to stop — silence is more effective, and replying confirms your address is active, which can lead to more emails.

Why you should not reply or click links

If someone is sending you unwanted emails, do not reply, even to ask them to stop. A reply confirms your email address is real and monitored, which often leads to more emails. The sender may also use your reply as proof that you are willing to communicate, which can complicate things if the situation escalates.

Do not click any links in unwanted emails, especially from people you do not know. Links can be used to confirm your address is active or, in some cases, to install malware. Blocking and reporting are safer and more effective than engaging with the sender in any way.

Frequently Asked Questions

Can the person I block see that I blocked them?

No. When you block someone, they do not receive a notification. If they try to email you, the email will be sent, but it goes to your spam folder instead of your inbox. They will not know whether the email reached you, bounced, or was blocked — from their perspective, the email was sent normally.

What happens to emails I already received from someone I block?

Blocking only affects future emails. Emails you already received stay in your inbox unless you delete them. If you want to remove old emails from a sender, you can search for their address, select all their emails, and delete them manually. Some email services also let you delete all emails from a sender at once through the block menu.

If I unsubscribe from a mailing list, can I resubscribe later?

Yes. Unsubscribing removes you from the list, but you can usually sign up again if you change your mind. Go to the company's website and look for a newsletter signup or mailing list option. You will need to provide your email address again and may need to confirm the subscription.

What is the difference between blocking and reporting as spam?

Blocking stops emails from reaching your inbox but does not report the sender to your email service. Reporting as spam tells the service that the sender is unwanted, which helps the service identify patterns and protect other users. If someone is harassing you or sending phishing emails, report as spam. If it is just someone you do not want to hear from, blocking is enough.

Will blocking someone stop them from seeing my social media or other accounts?

No. Blocking in email only affects that email service. It does not block them on social media, messaging apps, or other platforms. If you want to block someone across multiple services, you need to block them separately on each one.