Blocking a contact on Yahoo Mail stops their messages from reaching your inbox

When you block someone on Yahoo Mail, their emails go directly to your Spam folder instead of your inbox. You won't see notifications when they send you mail, and they won't know they're blocked — Yahoo doesn't notify them. The block stays in place until you remove it, and it applies across all Yahoo Mail devices and browsers you use.

Blocking is different from unsubscribing or marking as spam. A one-time spam report doesn't block future mail from that sender, but a block does. You can block up to 1,000 addresses in a single Yahoo Mail account, though most people never reach that limit.

Key Takeaways

  • Blocked emails land in your Spam folder automatically, and you won't receive notifications about them.
  • You can block someone directly from an email they sent you, or add an address to your block list manually.
  • Blocking works across all devices and browsers where you access Yahoo Mail with the same account.
  • You can unblock someone at any time by removing them from your blocked senders list.
  • Blocked senders don't receive any notification that they've been blocked.

Block someone from an email they sent you

The fastest way to block someone is to open an email from them and use the block option. Open the message, then look for the three-dot menu icon in the top right corner of the email. Click it and select "Block" from the dropdown menu. Yahoo will ask you to confirm — click "Block" again, and the sender is now blocked.

After you block them, Yahoo will move that email and any others from that address into your Spam folder. If you've already received multiple emails from this person, Yahoo may ask whether you want to move all their previous messages to Spam as well. You can choose yes or no — either way, future mail from them goes to Spam automatically.

Add an address to your block list manually

You don't need to wait for someone to email you first. If you know an email address you want to block, you can add it directly. Click the gear icon in the top right corner of Yahoo Mail and select "Settings." Then click "Filters" in the left sidebar.

Click "Add new filter" at the top of the Filters page. In the "From" field, type the email address you want to block. Scroll down and check the box next to "Move to Spam." Click "Save," and that address is now blocked. Any mail from them will go straight to Spam from that point forward.

View and manage your blocked senders list

You can see everyone you've blocked in one place. Go to Settings, then click "Blocked Addresses" in the left sidebar. This page shows every address you've blocked on this Yahoo Mail account. The list includes addresses you blocked directly and any you added through filters.

To unblock someone, find their address on this list and click the X button next to it. Confirm the removal, and they're unblocked immediately. Future emails from them will go to your inbox again instead of Spam, though they won't receive any notification that you've unblocked them.

Block an entire domain or email provider

If you're getting unwanted mail from multiple addresses at the same company or domain, you can block the entire domain at once. Go to Settings, click "Filters," and click "Add new filter." In the "From" field, type an asterisk followed by the domain name — for example, *@unwantedcompany.com. Check "Move to Spam" and click "Save."

This blocks every email address at that domain. Be careful with this approach if you might need to receive mail from that company in the future — you'll have to remove the filter to get any messages from them again. Domain-level blocks are useful for blocking entire marketing platforms or spam networks, but less useful for blocking one person at a company where you might need to hear from others.

What happens after you block someone

Blocked emails arrive in your Spam folder, and you can still read them if you go looking. Yahoo doesn't delete them — it just removes them from your inbox and stops showing you notifications. If you change your mind about blocking someone, you can unblock them from the Blocked Addresses list, and their future mail will return to your inbox.

The person you blocked has no way to know they're blocked. They won't receive a bounce-back message, and Yahoo doesn't tell them. If they're trying to reach you and their mail isn't getting through, they'll assume you're not responding, not that you've blocked them.

Blocking doesn't work for messages already in your inbox

If you've already received emails from someone and they're sitting in your inbox, blocking them won't automatically move those old messages to Spam. You'll need to delete them yourself or move them manually. Blocking only affects new mail from that sender going forward.

If you want to clean up old messages from someone before blocking them, open your inbox, search for their email address, select all their messages, and delete them. Then add them to your block list. This gives you a fresh start without their old mail cluttering your inbox.

Frequently Asked Questions

Can someone tell if I've blocked them on Yahoo Mail?

No. Yahoo doesn't notify blocked senders, and there's no way for them to know from Yahoo's side. If they try to email you and don't hear back, they'll assume you're not responding — they won't know you've blocked them.

What's the difference between blocking and reporting spam?

Reporting spam tells Yahoo that address is sending unwanted mail, which helps Yahoo identify spam patterns. Blocking stops that specific address from reaching your inbox. You can do both, but blocking alone is enough to keep someone out of your inbox.

If I block someone, can they still see emails I sent them before?

Yes. Blocking only affects mail going forward from them to you. Emails you already sent them remain in their inbox, and they can still read them. Blocking is one-way.

Can I block someone on Yahoo Mail from my phone?

Yes. Open the email from them, tap the three-dot menu, and select "Block." On the Yahoo Mail app, the process is the same as on a computer. Blocks sync across all devices using your Yahoo Mail account.

How many people can I block on Yahoo Mail?

Yahoo allows up to 1,000 blocked addresses per account. Most people never come close to this limit. If you're blocking hundreds of addresses, you might want to look at using filters or rules to handle mail from entire domains instead.