The fastest way to block someone in Yahoo Mail

To block an email address in Yahoo Mail, open the message from the sender you want to block, click the three-dot menu icon in the top right of the email, and select Block. Yahoo will move that sender's future emails to your Spam folder automatically. You can also block someone by right-clicking their name in your inbox and choosing Block from the menu.

Once you block a sender, you won't see their emails in your inbox anymore — they go straight to Spam. If you change your mind later, you can unblock them by going to Settings, finding the blocked senders list, and removing their address.

Key Takeaways

  • Blocking a sender in Yahoo Mail sends all their future emails to your Spam folder instead of your inbox.
  • You can block someone from an open email using the three-dot menu, or right-click their name in your inbox list.
  • Blocked senders can still send you emails — they just won't appear in your inbox or notifications.
  • You can view your blocked senders list and unblock addresses anytime through Yahoo Mail Settings.
  • Blocking is different from deleting: it stops future emails, while deleting only removes messages you've already received.

Block someone from an open email

When you have an email open on your screen, look for the three-dot menu icon (sometimes called "More actions") in the top right corner of the message. Click it and you'll see a dropdown menu with several options. Select Block from that list.

Yahoo will confirm that you've blocked the sender and ask if you want to move their current email to Spam. Choose yes, and the message disappears from your inbox. Any emails from that address that arrive after this point will go directly to Spam without notifying you.

Block someone from your inbox list

You don't have to open an email to block the sender. In your inbox, find the message from the person you want to block, right-click on their name or the message itself, and a context menu will appear. Select Block sender from the options shown.

This method works the same way as blocking from an open email — future messages from that address go to Spam. It's faster if you want to block someone without reading their message first.

Find and manage your blocked senders list

Yahoo keeps a record of everyone you've blocked. To see this list, click the gear icon in the top right of Yahoo Mail and select Settings. In the Settings menu, look for Security or Blocked addresses (the exact name varies depending on your Yahoo Mail version).

Your blocked senders list shows every address you've blocked. If you want to unblock someone, find their address in the list and click the X or Remove button next to their name. Once you unblock them, their emails will start arriving in your inbox again instead of going to Spam.

What happens when you block someone

Blocking doesn't delete old emails from that sender — it only affects new messages. If you've already received 50 emails from someone before blocking them, those 50 messages stay in your inbox or Spam folder. Blocking only stops future emails from that address.

The blocked sender can still send you emails. They won't know they're blocked, and their messages will still be delivered to Yahoo's servers. The difference is that you won't see them in your inbox or get notifications about them — they land in Spam instead. If you need to see what they sent, you can check your Spam folder anytime.

Block emails by domain instead of individual address

If you're getting unwanted emails from many addresses at the same company or domain, blocking one address at a time takes too long. Yahoo Mail doesn't have a built-in feature to block an entire domain directly from the interface, but you can create a filter rule to send all emails from a domain to Spam.

Go to Settings, select Filters, and click Add a new filter. In the "From" field, type the domain name (for example, @unwantedcompany.com). Set the filter to move matching emails to Spam. From then on, any email from any address at that domain will skip your inbox.

Difference between blocking, deleting, and filtering

These three tools do different things. Blocking stops future emails from a specific sender and sends them to Spam. Deleting removes emails you've already received — it doesn't affect future messages. Filtering automatically sorts incoming emails based on rules you set, like sender address, subject line, or keywords.

If someone is sending you unwanted emails repeatedly, blocking is the right choice. If you just want to clean up your inbox, delete old messages. If you want to organize emails automatically (like sending newsletters to a folder), use filters. You can use all three together — for example, block a sender and also delete their old messages, then set up a filter for similar unwanted emails.

Frequently Asked Questions

Can I block emails by subject line or keyword instead of sender?

Yahoo Mail's block feature only works by sender address. To filter emails by subject or content, use the Filters tool instead. Go to Settings, select Filters, and create a rule that moves emails with specific words or phrases to Spam automatically.

Will a blocked sender know I blocked them?

No. Blocked senders won't receive any notification that you've blocked them. Their emails still get delivered to Yahoo's servers — they just go to your Spam folder instead of your inbox. They have no way of knowing whether you read their messages or blocked them.

What if I accidentally block someone I didn't mean to?

Go to Settings, find your blocked senders list, locate the address you blocked by mistake, and click Remove or the X button next to it. Their emails will start arriving in your inbox again. Any messages they sent while blocked will still be in your Spam folder, and you can move them back to your inbox if needed.

Can I block emails from a phone or tablet?

Yes. Open the email you want to block, tap the three-dot menu icon, and select Block. The process is the same on the Yahoo Mail app for iPhone, iPad, and Android. To manage your blocked list on mobile, go to Settings within the app and look for Security or Blocked addresses.

If I block someone, will they see that I read their emails?

No. Blocking only affects where their future emails land — it doesn't change read receipts or delivery confirmations for messages they've already sent. If you had read receipts turned on before blocking them, they may have already seen that you read previous emails, but blocking doesn't change that.