The fastest way to block an email address

Most email services let you block a sender in one or two clicks. Open any message from the person you want to block, look for a menu icon (usually three dots or a downward arrow), and select "Block" or "Block sender". The email service then sends their future messages straight to spam or a blocked folder, and you won't see notifications from them.

The exact steps and menu location differ between Gmail, Outlook, Yahoo Mail, and other services, but the principle is the same: find the message, open the sender options, and choose block. Once blocked, you won't receive new messages from that address — though messages already in your inbox stay there unless you delete them yourself.

If you can't find a block option in the menu, check your email service's settings or help section. Some services hide the block feature under "Filters", "Rules", or "Blocked Senders" instead of putting it on the message itself.

Key Takeaways

  • Blocking sends future messages to spam automatically, but does not delete messages already in your inbox.
  • The block feature is usually in a menu on the message itself, marked with three dots or a downward arrow.
  • If someone uses a different email address, you will need to block that address separately — blocking one address does not block all addresses from the same person.
  • Some email services let you unblock a sender later if you change your mind, usually in your settings under "Blocked Senders" or "Blocked Addresses".

Where to find the block option in your email service

Gmail users should open the message, click the three-dot menu in the top right, and select "Block [sender's name]". In Outlook, right-click the message or click the three-dot menu and choose "Block". Yahoo Mail users click the three-dot menu and select "Block". Apple Mail on a Mac or iPhone has a block option in the message details or sender card.

If you use a less common email service, the block feature may be in a different location. Check the help or settings section of your email service and search for "block sender" or "block email address". Most services have a dedicated settings page where you can see all blocked addresses and unblock them if needed.

Some email services do not have a built-in block feature. In that case, you can create a filter or rule that automatically sends messages from that address to spam or deletes them. The steps vary by service, but the settings page usually has a "Filters", "Rules", or "Email Forwarding" section where you can set this up.

What happens when you block someone

When you block an email address, new messages from that sender go to your spam or junk folder instead of your inbox. You will not see a notification when they send you a message, and most email services do not tell the blocked sender that you have blocked them.

Blocking does not delete messages that are already in your inbox. If you want to remove old messages from that person, you need to delete them yourself. Some people delete the messages first, then block the address, so they do not have to see any record of the conversation.

If the person sends you a message from a different email address, that new address will not be blocked automatically. You will need to block each address separately. This is why blocking works best when someone is harassing you from one consistent email address, but may not stop all contact if they keep creating new addresses.

Unblocking an email address if you change your mind

Most email services let you unblock a sender through your settings. In Gmail, go to Settings, click the "Filters and Blocked Addresses" tab, find the blocked address, and click "Unblock". In Outlook, go to Settings, select "Mail", then "Junk email", and look for "Blocked Senders". Yahoo Mail has a similar option in Settings under "Blocked Addresses".

Once you unblock an address, messages from that sender will go to your inbox again instead of spam. You will start receiving notifications from them as usual. If you unblock someone by mistake, you can block them again when ready.

When blocking is not enough

If someone is sending you threatening, abusive, or harassing messages, blocking them in your email service is a good first step. However, blocking only stops messages from reaching your inbox — it does not prevent the person from sending them or from contacting you through other means.

If the harassment continues after you block the address, or if the person contacts you through social media, text, or phone, consider reporting the behavior to the platform where it is happening. Most social media services and phone carriers have their own reporting and blocking tools. If you feel unsafe, contact local law enforcement.

Some email services also have a "Report spam" or "Report abuse" button alongside the block option. Using this button helps the email service identify patterns of harassment and may prevent the sender from contacting other people.

Blocking email addresses from specific domains

If you are receiving unwanted messages from many addresses at the same company or domain (for example, multiple addresses ending in @unwantedcompany.com), some email services let you block the entire domain instead of blocking each address one at a time. This is usually done through filters or rules rather than the straightforward block button.

In Gmail, you can create a filter that catches all messages from a domain. Go to Settings, click "Filters and Blocked Addresses", then "Create a new filter". In the "From" field, type the domain (for example, @unwantedcompany.com), and choose to delete or skip the inbox for all messages from that domain. Outlook and Yahoo Mail have similar filter options in their settings.

Be careful when blocking an entire domain — you might accidentally block messages from people at that company whose emails you actually want to receive. If you work with people at that domain, blocking the whole domain could cause you to miss important messages.

Frequently Asked Questions

Does the person I blocked know that I blocked them?

No. Most email services do not notify someone when you block them. They will not see an error message or any indication that you blocked their address — their message will straightforward go to spam or be deleted without reaching you.

Can a blocked person see my out-of-office message or know I am checking email?

No. When someone is blocked, their messages do not reach your email system at all, so they will not trigger an out-of-office reply or any other automatic response. They have no way to know whether you are reading email or not.

If I block someone, will they be blocked on other devices I use?

Yes, if you use the same email account on multiple devices (phone, tablet, computer), the block applies to all of them. The block is tied to your email account, not to a specific device.

What if someone keeps creating new email addresses to contact me?

You will need to block each new address as it appears. If this is happening repeatedly, report the pattern to your email service's abuse team — they may be able to take action against the person's account. You can also create a filter that blocks messages containing certain words or phrases if the person is using similar language in each message.

Can I block someone without them knowing I read their message?

If you open a message before blocking the sender, they may see a read receipt if you have read receipts turned on. To avoid this, you can block the address first, then delete the message without opening it. Check your email service's settings to turn off read receipts if you do not want senders to know when you have read their messages.