The fastest way to block an email address in Yahoo Mail

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

That's the complete process — it takes about five seconds. Once blocked, emails from that address go straight to your spam folder. You can unblock the sender later if you change your mind by going to Settings and finding the blocked senders list.

Key Takeaways

  • Click the three-dot menu on any email and select Block sender to send that address's future messages to spam.
  • Blocked senders' emails still arrive in your spam folder — they are not deleted, just hidden from your inbox.
  • You can view your list of blocked senders in Settings under Privacy, and unblock anyone at any time.
  • Blocking works on the email address itself, so if someone uses a different address, you will need to block that one separately.

Where to find your blocked senders list

Go to your Yahoo Mail settings by clicking the gear icon in the top right corner. Select Settings from the menu. Click Privacy in the left sidebar, then look for Blocked addresses.

This page shows every address you have blocked. You can remove anyone from the list by clicking the X next to their name. Once you unblock them, their emails will return to your inbox normally instead of going to spam.

What happens when you block someone

Blocked senders' emails arrive in your spam folder, not your inbox. You won't get a notification when they send you something. The sender does not receive any message telling them they are blocked — their email straightforward goes nowhere visible to you.

If you accidentally block someone important, unblocking them takes seconds. Go back to Settings > Privacy > Blocked addresses and remove their name. Their next email will land in your inbox like normal.

Blocking email addresses versus blocking domains

Yahoo Mail blocks individual email addresses, not entire domains. If you block spam@example.com, emails from other@example.com will still reach your inbox. This protects you from blocking legitimate mail from a company if one person at that company is sending unwanted messages.

If you are receiving spam from many addresses at the same domain, you have two options: block each address individually, or create a filter rule in Settings that catches emails matching certain words or sender patterns. Filters are more powerful but require a bit more setup.

Using filters for more control

If blocking individual addresses feels tedious, you can create a filter rule instead. Go to Settings > Filters and select Add new filter. You can set rules like "if the sender contains 'example.com', send to spam" or "if the subject line contains certain words, delete automatically."

Filters catch emails before they reach your inbox, so you won't see them at all. They are useful when you are getting repeated spam from variations of the same sender or when you want to automatically sort legitimate mail into folders.

Blocking on mobile versus desktop

The process is nearly identical on the Yahoo Mail app for iPhone or Android. Open an email, tap the three dots at the top, and select Block sender. The blocked sender's future emails go to spam just like on desktop.

Your blocked senders list syncs across all devices. If you block someone on your phone, they are blocked when you check mail on your computer too. The same goes for unblocking — changes appear everywhere within a few minutes.

When blocking does not solve the problem

Blocking works well for individual senders, but it does not stop new accounts created by the same person. If someone is harassing you from multiple addresses, blocking each one individually becomes impractical. In that case, consider reporting the emails as abuse instead of just blocking them.

Click the three dots on a spam email and select Report phishing or Report spam depending on what the email is. Reporting helps Yahoo Mail identify patterns and can lead to the sender's account being suspended. For serious harassment, you may also want to save copies of the emails and contact local law enforcement.

Frequently Asked Questions

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

Not directly through the block feature, but you can use filters to catch emails by subject, keywords, or sender patterns. Go to Settings > Filters and create a rule that automatically sends matching emails to spam or deletes them.

Will the blocked sender know I blocked them?

No. They will not receive any notification. Their emails straightforward go to your spam folder, and they have no way of knowing whether you blocked them, deleted them, or never saw them.

What if I block someone by mistake?

Go to Settings > Privacy > Blocked addresses and click the X next to their name to unblock them. Their next email will arrive in your inbox normally. There is no penalty for unblocking.

Can I block all emails from a company's domain?

Blocking only works on individual email addresses. To block an entire domain like @example.com, use a filter rule instead. Go to Settings > Filters and create a rule that catches any sender from that domain.

Do blocked emails get deleted or just hidden?

They are hidden in your spam folder, not deleted. You can still view them if you check spam, and you can move them back to your inbox if needed. They are only permanently deleted if you empty your spam folder.