The fastest way to block someone in Yahoo Mail

Open the email from the person you want to block. Click the three dots (more actions menu) in the top right of the email. Select Block from the dropdown. Yahoo Mail will move that sender's future emails to spam automatically, and you won't see notifications when they arrive.

If you've already deleted the email, you can still block the sender. Go to your Spam folder, find an email from that address, open it, and use the same three-dot menu to block. The sender will be added to your blocked list even if you don't have a recent message from them.

Once you block someone, Yahoo Mail stores their address in your blocked senders list. You can view, add to, or remove addresses from this list anytime in your account settings under Privacy and Security.

Key Takeaways

  • Blocking takes one click from the email itself — open the message, tap the three-dot menu, and select Block.
  • Blocked emails go to your spam folder automatically, and you won't receive notifications about them.
  • You can block an address even if you've deleted the original email by finding it in your Spam folder first.
  • Your blocked senders list lives in account settings under Privacy and Security, where you can add or remove addresses manually.
  • Blocking someone in Yahoo Mail does not prevent them from sending — it only hides their messages from your inbox.

Blocking from your blocked senders list directly

You don't need an email in front of you to block someone. Go to your Yahoo Mail account settings by clicking your profile picture in the top right corner, then select Account info. Click Security and privacy on the left sidebar, then scroll down to Blocked senders.

Type or paste the email address you want to block into the text field and click Block. Yahoo Mail will add it to your list when ready. This method works if someone has been harassing you but you've already deleted their messages, or if you want to block an address before you ever receive mail from it.

The blocked senders list shows every address you've blocked. You can remove an address from the list by clicking the X next to it, which will unblock that sender and allow their emails back into your inbox.

What happens when you block someone

When you block an email address, Yahoo Mail sends all future messages from that sender directly to your spam folder. You won't see a notification, and the email won't appear in your inbox. The blocked sender has no way to know they've been blocked — Yahoo Mail doesn't send them a message or alert.

Blocking is different from unsubscribing. If you block someone, they can still send you emails; Yahoo Mail just hides them. If you unsubscribe from a mailing list, you're asking the sender to remove you from their distribution list. Many legitimate companies offer an unsubscribe link at the bottom of their emails, which is the better choice for newsletters or marketing mail you no longer want.

Emails from blocked senders stay in your spam folder for 30 days before Yahoo Mail deletes them automatically. If you change your mind about blocking someone, you can unblock them from your blocked senders list, and their future emails will go back to your inbox normally.

Blocking on mobile devices

The Yahoo Mail app on iPhone and Android works the same way as the web version. Open an email from the person you want to block, tap the three dots in the top right corner, and select Block sender. The app will move their future emails to spam.

To manage your blocked list on mobile, open the app menu (three horizontal lines), scroll down to Settings, tap Privacy, and select Blocked senders. You can add new addresses or remove existing ones from this screen. The changes sync across all your devices — if you block someone on your phone, they're blocked on your computer too.

When blocking might not be the right choice

Blocking works well for spam and unwanted personal emails, but it has limits. If someone is threatening you or harassing you repeatedly, blocking alone may not be enough. Consider reporting the email to Yahoo Mail as abuse or spam, which helps Yahoo's systems learn to catch similar messages from other senders.

If you're receiving emails from a business account that you want to stop, check the email for an unsubscribe link first. Most legitimate companies include one at the bottom of their messages. Unsubscribing removes you from their mailing list, which is cleaner than blocking and prevents future emails before they're sent.

For serious harassment or threats, save the emails as evidence and report them to your local police or the FBI's Internet Crime Complaint Center. Yahoo Mail's block feature is a privacy tool, not a legal protection.

Unblocking a sender if you change your mind

Go to your account settings, select Security and privacy, and find Blocked senders. Look for the address you want to unblock in the list and click the X next to it. Yahoo Mail will remove them from your blocked list when ready.

Once you unblock someone, their emails will no longer go to spam automatically. If they've sent you messages while blocked, those emails will still be in your spam folder — unblocking doesn't move them back to your inbox. You can manually move them if you want to see them, or leave them in spam and delete them later.

Frequently Asked Questions

Can I block multiple email addresses at once?

No, Yahoo Mail requires you to block addresses one at a time. Open your blocked senders list in account settings and add each address individually. If you're receiving spam from many addresses, reporting the emails as spam instead may be faster — Yahoo's filters learn from reports and can catch similar messages automatically.

Will the person I block know I blocked them?

No. Yahoo Mail doesn't notify blocked senders, and there's no way for them to know their emails are going to your spam folder. They'll see no bounce-back message or delivery failure — the email will appear to send normally on their end.

What's the difference between blocking and reporting as spam?

Blocking adds one specific address to your personal blocked list and hides their future emails. Reporting as spam tells Yahoo Mail the message is unwanted, which helps train Yahoo's filters to catch similar emails from that sender and others. You can do both — report the email as spam and then block the address.

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

Yahoo Mail doesn't have a built-in feature to block entire domains. You have to block individual email addresses. If you're receiving spam from many addresses at the same domain, report several of them as spam so Yahoo's filters learn to catch others from that domain automatically.

If I block someone, will they still see emails I send them?

Yes. Blocking only affects emails coming to you — it doesn't prevent you from sending emails to that person or prevent them from receiving them. If you want to stop communicating with someone, you'll need to stop sending them emails yourself.