Blocking stops a sender from reaching your inbox

When you block someone in email, their messages go to spam or a blocked folder instead of your inbox. The exact behavior depends on which email service you use — Gmail, Outlook, Yahoo, or another provider — but the result is the same: you stop seeing their messages without deleting your account or changing your address.

Blocking is different from unsubscribing. Unsubscribe removes you from a mailing list run by a legitimate sender. Blocking is for people or addresses you do not want to hear from at all, whether they are sending unwanted mail repeatedly, harassing you, or just cluttering your inbox.

Most email services let you block in seconds from the message itself. You do not need to dig through settings or remember the person's exact address.

Key Takeaways

  • Blocking sends future messages from that address to spam or a blocked folder, but does not delete messages already in your inbox.
  • The steps to block differ by email service: Gmail, Outlook, Yahoo, and others each have their own process.
  • You can usually block someone by right-clicking their message or using a menu option in the email itself.
  • Blocked senders can still see that their messages were sent — they just will not know you blocked them unless you tell them.
  • You can unblock someone later if you change your mind, though the process varies by service.

How to block in Gmail

Open the message from the person you want to block. Click the three-dot menu icon in the top right of the message. Select "Block [sender's name]" from the dropdown menu.

Gmail will move that message and all future messages from that address to your spam folder. You can still see blocked messages if you go to your spam folder — blocking does not delete them. If you want to delete the message instead, do that before or after blocking.

To unblock someone in Gmail, go to Settings, then Filters and Blocked Addresses, find the blocked address in the list, and click "Unblock" next to it.

How to block in Outlook

Open the message from the person you want to block. Click the three-dot menu icon at the top right of the message. Select "Block" from the menu.

Outlook will move that message and all future messages from that address to your Junk folder. Like Gmail, blocking does not delete old messages — it only affects new ones.

To unblock in Outlook, go to Settings, then Mail, then Junk Email. Find the blocked address in the "Blocked Senders" list and click the X next to it to remove it.

How to block in Yahoo Mail

Open the message from the person you want to block. Click the three-dot menu icon. Select "Block sender" from the options.

Yahoo will send that sender's messages to spam. To unblock, go to Settings, then Security and Privacy, find the blocked address in the "Blocked addresses" list, and click "Unblock."

What happens when you block someone

Once you block an address, all messages from that sender go to spam or a blocked folder. You will not see notifications for their messages, and they will not appear in your inbox. If the person sends from multiple addresses, you will need to block each one separately — blocking one email address does not block the whole person.

The blocked sender does not receive a notification that you blocked them. Their messages still show as "sent" on their end, so they may not realize you are not reading them. If they contact you through another method to ask why you are not responding, that is between you and them.

Blocking is not the same as reporting spam. When you report a message as spam, you tell your email service that the sender is sending unsolicited bulk mail. Blocking just hides their messages from you. If someone is sending threats, harassment, or illegal content, report it to your email provider in addition to blocking.

When to block versus other options

Block someone when they are sending you unwanted messages repeatedly and you do not want to see anything from them. This includes people you know personally, work contacts you want to avoid, or strangers sending spam.

Use "Unsubscribe" instead if the sender is a legitimate business or newsletter and you just do not want their messages anymore. Most marketing emails have an unsubscribe link at the bottom. Unsubscribe removes you from their list without blocking the address.

Use "Report as spam" if the messages look like phishing, scams, or bulk unsolicited mail. Reporting helps your email service identify and filter similar messages for all users. You can report and block at the same time.

Use "Delete" or "Archive" if you just want the message out of your inbox but might want to find it later. Deleting does not stop future messages from the same sender.

Blocking does not work across email services

If you block someone in Gmail, they can still email you at your Outlook address. Blocking is specific to each email account and service. If you use multiple email addresses, you may need to block the same person in each one.

If someone is harassing you across multiple platforms or email addresses, keep records of the messages and consider reporting them to your email provider's abuse team. Most services have a process for handling coordinated harassment.

Frequently Asked Questions

Can a blocked sender tell that I blocked them?

No. Their message still shows as sent on their end, so they will not get a notification. They might suspect it if you stop responding, but the email service does not tell them you blocked them.

If I block someone, will old messages from them disappear?

No. Blocking only affects new messages. Old messages stay in your inbox unless you delete them. You can delete them before or after blocking.

What if someone blocks me — will I know?

You will not get a notification. Your message will still show as sent. If you never get a reply and your messages keep bouncing back, that could mean they blocked you, but you cannot be certain without asking them directly.

Can I block an entire domain instead of just one email address?

Most email services do not have a built-in option to block a whole domain at once. You have to block individual addresses. If you are getting many messages from the same domain, you can create a filter rule that sends all messages from that domain to spam, though the exact steps vary by service.

If I unblock someone, will I see their old messages again?

No. Unblocking just stops new messages from going to spam. Old messages that were moved to spam stay there unless you move them back manually.