The fastest way to block an email address

The method depends on which email service you use. Gmail, Outlook, and Yahoo all have a block button built into each message — you do not need to dig through settings. Open the email from the person you want to block, click the three-dot menu icon (or similar options button) at the top right of the message, and select "Block" or "Block this sender". The sender's future emails go straight to spam, and you will not see notifications for them.

If you use a different email provider, the button is usually in the same place: look for a menu icon next to the sender's name or at the top of the message. Some services call it "Block sender" or "Report spam and block". Once blocked, that person's emails stop reaching your inbox.

You can unblock someone later if you change your mind. Go to your email settings, find the blocked senders list (usually under Privacy or Filters), and remove their address from it.

Key Takeaways

  • Gmail, Outlook, and Yahoo let you block a sender directly from any email by clicking the three-dot menu and selecting "Block".
  • Blocked emails go to your spam folder automatically, and you will not receive notifications about them.
  • You can view your list of blocked senders in your email settings and unblock someone if needed.
  • Blocking only stops emails from reaching your inbox — it does not prevent the person from sending them.
  • If someone uses multiple email addresses, you may need to block each address separately.

Gmail: blocking step by step

Open the email from the person you want to block. At the top right of the message, you will see three vertical dots. Click them, then select "Block [sender's name]" from the menu. Gmail will ask you to confirm — click "Block" again, and the sender is now blocked.

To see your blocked senders list in Gmail, go to Settings (the gear icon in the top right), click "See all settings", then go to the Filters and Blocked Addresses tab. Your blocked addresses appear at the bottom of that page. To unblock someone, click the "unblock" link next to their address.

Outlook: blocking step by step

Open the email from the person you want to block. Click the three dots at the top right of the message. Select "Block" from the dropdown menu. Outlook will move that sender's emails to your Junk folder from now on.

To manage your blocked list in Outlook, go to Settings (the gear icon), then select "View all Outlook settings". Click "Mail", then "Junk email". Under "Blocked senders", you will see everyone you have blocked. You can add addresses here manually or remove them if you want to unblock someone.

Yahoo Mail: blocking step by step

Open the email from the sender you want to block. Click the three dots at the top right. Select "Block sender" from the menu. Yahoo will confirm the block and send future emails from that address to spam.

To view or change your blocked senders in Yahoo, click the gear icon in the top right, then select "Settings". Go to "Security and privacy", then scroll down to "Blocked addresses". You can add new addresses here or remove existing blocks.

What happens when you block someone

When you block an email address, all future messages from that sender go directly to your spam or junk folder. You will not see a notification when they send you an email, and their messages will not appear in your inbox. The sender does not receive a notification that you have blocked them — they may not know at all.

Blocking only affects emails. It does not prevent the person from calling you, texting you, or contacting you through other services. If you want to block someone across multiple platforms, you will need to use the blocking tools in each one separately.

Emails that arrived before you blocked the sender will still be in your inbox unless you delete them. Blocking only stops new messages from reaching you.

When blocking does not work

If someone keeps contacting you from different email addresses, you may need to block each address separately. There is no way to block an entire domain (like all addresses ending in @example.com) in most email services, though some advanced email clients allow this through filter rules.

If the messages are threatening, harassing, or illegal, blocking alone may not be enough. You can report the emails as spam or abuse using your email service's report button, which sends them to the email provider's abuse team. For serious threats, you may want to contact local law enforcement or save the emails as evidence.

Using filters as an alternative to blocking

If you want more control than a straightforward block, most email services let you create filters or rules. A filter can automatically delete emails from someone, send them to a specific folder, or mark them as read before you see them. Filters are more flexible than blocking because you can set conditions — for example, delete emails from someone only if they contain certain words.

In Gmail, go to Settings, then Filters and Blocked Addresses, and click "Create a new filter". In Outlook, go to Settings, then Mail, then Rules. In Yahoo, go to Settings, then Mailboxes, then Filters. Each service has slightly different options, but all let you automate what happens to emails from a specific sender.

Frequently Asked Questions

Can the person I blocked tell that I blocked them?

No. When you block someone, they do not receive a notification. Their emails straightforward go to spam, and they have no way to know you blocked them unless you tell them. They may notice you are not responding, but email blocking itself is invisible to them.

What if I block someone by mistake?

You can unblock them anytime. Go to your email settings, find the blocked senders list, and click the unblock option next to their name. After you unblock them, their future emails will go to your inbox again, and you will see notifications for them.

Does blocking someone delete their old emails from my inbox?

No. Blocking only stops new emails from reaching you. Any messages from that person that are already in your inbox will stay there unless you delete them manually. If you want to remove them, you will need to select and delete them yourself.

Can I block someone if I do not know their email address?

You need to receive an email from them first. You cannot block an address you have never seen. Once they send you a message, you can open it and use the block button. If you want to block someone before they email you, you can add their address to your blocked list manually through your email settings.

What is the difference between blocking and reporting spam?

Blocking stops emails from a specific address from reaching your inbox. Reporting spam tells your email provider that the sender is sending unwanted messages, which helps them identify and stop spam across all users. You can do both — report the email as spam and then block the sender.