Yes, you can block emails in every major email service
Every email provider — Gmail, Outlook, Yahoo Mail, Apple Mail — has a built-in block feature that stops messages from a specific sender from reaching your inbox. When you block someone, their emails go to spam or a blocked folder instead, and they won't see a notification that you blocked them. The process takes seconds and doesn't require any special software or settings.
The exact steps depend on which email service you use, but the principle is the same: find the message, click a menu, and select block or report spam. You can also block addresses before you receive anything from them if you know you don't want mail from a particular sender.
Key Takeaways
- Blocking an email address in Gmail, Outlook, or Yahoo Mail takes one or two clicks and sends future messages to spam automatically.
- Blocked senders cannot tell they have been blocked, and they receive no bounce-back or rejection notice.
- If you block someone by mistake, you can unblock them in your email settings — the process is reversible.
- Blocking works for individual addresses, but mass marketing emails often come from rotating addresses, so you may need to unsubscribe instead.
- Your email provider keeps a list of blocked addresses, so you can review or change it anytime.
How to block 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's name]" from the dropdown. Gmail will move that sender's future emails to spam automatically.
If you want to block an address without opening a message first, go to Settings (the gear icon in the top right), click "See all settings," go to the Filters and Blocked Addresses tab, and scroll to "Blocked addresses." Type the email address you want to block and click "Block."
How to block in Outlook and Outlook.com
Open the message from the sender you want to block. Click the three-dot menu at the top of the email. Select "Block" or "Junk" depending on your version. Outlook will send future messages from that address to your Junk folder.
You can also block addresses through Settings. Click the gear icon, go to "Mail," then "Junk email," and add addresses to the "Blocked senders" list. Outlook keeps a record of everyone you have blocked, and you can remove addresses from this list anytime.
How to block in Yahoo Mail
Open the email from the sender you want to block. Click the three-dot menu icon. Select "Block sender." Yahoo will automatically move future messages from that address to spam.
To manage your blocked list, click the gear icon in the top right, select "Settings," go to "Security and privacy," and look for "Blocked addresses." You can add addresses manually here or remove ones you have already blocked.
What happens when you block someone
When you block an email address, the sender's messages stop appearing in your inbox. Instead, they land in your spam or junk folder, where you won't see them unless you look. The blocked sender does not receive a message saying you blocked them — their email straightforward disappears from your view.
If the sender tries to contact you through a different email address, that message will come through normally because blocking works on a per-address basis, not per person. If someone is harassing you from multiple addresses, you will need to block each one separately.
The difference between blocking and unsubscribing
Blocking and unsubscribing are not the same thing. When you block an address, you stop seeing emails from that specific sender. When you unsubscribe, you tell a mailing list that you no longer want to receive messages, and the sender removes your address from their list.
Most marketing emails, newsletters, and promotional messages include an unsubscribe link at the bottom. Clicking that link is usually more effective than blocking because it removes you from the sender's system entirely. Blocking is better for personal emails from people you do not want to hear from, or for spam that does not have an unsubscribe option.
How to unblock an email address
If you block someone by mistake, you can unblock them. In Gmail, go to Settings, click "Filters and Blocked Addresses," find the address in your blocked list, and click the X next to it. In Outlook, go to Settings, select "Junk email," find the address in "Blocked senders," and click the trash icon. In Yahoo Mail, go to Settings, click "Security and privacy," find the address, and click "Unblock."
Once you unblock an address, emails from that sender will return to your inbox normally. Any messages that arrived while the address was blocked will still be in your spam folder, but new messages will come through.
When blocking is not enough
If someone is sending you threatening, abusive, or harassing emails, blocking alone may not be enough. Most email providers let you report messages as abuse or harassment in addition to blocking. In Gmail, click the three-dot menu and select "Report phishing" or "Report spam." In Outlook, click "Junk" and then "Phishing." In Yahoo Mail, click the three-dot menu and select "Report as abuse."
Reporting sends the message to your email provider's abuse team, who review it and may take action against the sender's account. If the harassment continues or escalates, you can also contact local law enforcement or your email provider's support team for additional options.
Frequently Asked Questions
Can the person I blocked tell that I blocked them?
No. When you block someone, they receive no notification. Their emails straightforward fail to reach your inbox, and they have no way of knowing whether you blocked them, marked them as spam, or stopped using that email address entirely.
What if someone keeps emailing me from different addresses?
You will need to block each address separately. If the harassment is ongoing and involves multiple addresses, report the messages to your email provider's abuse team. They can investigate patterns of harassment and may suspend the sender's account.
Does blocking delete old emails from that sender?
No. Blocking only affects future emails. Any messages you already received from that address will stay in your inbox or archive unless you delete them manually. You can search for the sender's address and delete old messages if you want to remove them.
Can I block an entire domain instead of just one address?
Most email services do not have a built-in domain block feature in the standard interface. However, Gmail and Outlook both allow you to create filters that automatically delete or spam emails from a specific domain. In Gmail, go to Settings, Filters and Blocked Addresses, and create a filter with the domain name (for example, @unwanteddomain.com) in the "From" field.
What is the difference between blocking and marking as spam?
Blocking and marking as spam both send emails to your junk folder, but marking as spam also tells your email provider that the message is unwanted, which helps train the spam filter for other users. Blocking is more direct — it targets one specific address. For marketing emails and newsletters, marking as spam is often more effective than blocking.