The fastest way to block an email address

Open the email from the sender you want to block. Click the three dots (more actions menu) in the top right of the email. Select "Block [sender's name]" from the dropdown menu. Gmail will move all future emails from that address to spam and hide any existing messages from that sender in your inbox.

That is the complete process. Once blocked, you will not see emails from that address unless you go into your spam folder and unblock them later. The sender will not be notified that you blocked them.

Key Takeaways

  • You can block an email address directly from any message they sent you by clicking the three-dot menu and selecting "Block."
  • Blocked emails go to spam automatically, and Gmail hides any messages from that sender that were already in your inbox.
  • If you block someone by mistake, you can unblock them from your spam folder or from Gmail settings.
  • Blocking works for individual email addresses, not entire domains, so a sender using a different address can still reach you.
  • Gmail does not notify the sender that you blocked them.

Blocking from Gmail settings instead of an email

If you do not have an email from the sender in front of you, you can block them through Gmail settings. Go to Settings (the gear icon in the top right), then select "See all settings." Click the "Filters and Blocked Addresses" tab.

Click "Create a new filter" at the bottom of the page. Type the email address you want to block in the "From" field. Click "Create filter." Check the box next to "Delete it" (or "Skip the inbox" if you want to review them in spam first), then click "Create filter." All future emails from that address will be deleted or sent to spam.

What happens when you block someone

When you block an email address, Gmail automatically sends all messages from that sender to your spam folder. Any emails from that address that were already in your inbox, sent folder, or other labels will be hidden from view — but they are not deleted from Gmail's servers.

The blocked sender can still send you emails. They will not receive a bounce-back message or any notification that you blocked them. If they check whether their email reached you, they will have no way to know from Gmail's side. However, if you had been replying to their emails before, your sudden silence may signal something is wrong.

Unblocking an email address

Open your spam folder. Find an email from the person you want to unblock. Click the three-dot menu and select "Unblock [sender's name]." Gmail will remove them from your blocked list, and their future emails will arrive in your inbox normally.

Alternatively, go to Settings, click "Filters and Blocked Addresses," find the filter you created for that address, and click the delete icon (trash can) next to it. This removes the block without recovering the hidden emails — they stay in spam unless you move them manually.

Blocking email addresses that use different variations

A sender can reach you even after you block them if they use a different email address. Blocking stops emails from one specific address only. If someone has access to multiple email accounts, they can send from any of them.

If you are being contacted repeatedly by the same person from different addresses, blocking each one individually becomes tedious. In that case, consider using Gmail's "Report spam" option instead, which helps Gmail's filters learn to catch similar messages. You can also create a filter that blocks emails containing specific words in the subject line or message body, which catches variations more broadly.

Blocking entire domains or mailing lists

You can block all emails from a specific domain (like @company.com) by creating a filter. Go to Settings, click "Filters and Blocked Addresses," and click "Create a new filter." In the "From" field, type the domain with an asterisk: *@company.com. Click "Create filter" and choose "Delete it" or "Skip the inbox." All emails from any address at that domain will be blocked.

For mailing lists, find the unsubscribe link at the bottom of one of their emails. Most legitimate mailing lists include this link by law. Clicking it removes you from the list entirely, which is usually faster and cleaner than blocking. If there is no unsubscribe link, then blocking or filtering is your best option.

When blocking does not work the way you expect

If you block someone and still see their emails in your inbox, the most common cause is that the email address in the "From" field is not the actual sender address. Some emails are sent through forwarding services, mailing list managers, or third-party apps that mask the real sender. In these cases, blocking the visible address does not stop the emails because they are technically coming from a different source.

Check the full email headers to see the actual sender address. In Gmail, open the email, click the three dots, and select "Show original." Look for the line that says "From:" — that is the address you need to block. If the real sender is a mailing list or service, blocking may not help; unsubscribing or reporting as spam is more effective.

Frequently Asked Questions

Can the person I blocked tell that I blocked them?

No. Gmail does not send a notification to blocked senders. They will not receive a bounce-back message or any technical signal that you blocked them. If they are paying attention to whether you reply, they may notice your silence, but Gmail itself keeps the block private.

Will blocking delete emails that are already in my inbox?

No. Blocking hides existing emails from that sender, but they are not deleted. They move out of sight in your inbox and other folders. You can still find them in your spam folder or by searching for the sender's name. If you want to permanently delete them, you must do that manually.

What is the difference between blocking and unsubscribing?

Unsubscribing removes you from a mailing list, so the sender stops sending you emails. Blocking stops emails from reaching your inbox but does not notify the sender that you want off the list. For newsletters and marketing emails, unsubscribing is usually the right choice. For unwanted personal emails, blocking is more appropriate.

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

Yes. Blocking only affects emails coming to you from that address. Any emails you already sent them remain in their inbox. Blocking does not delete your sent messages or prevent them from reading what you wrote before you blocked them.

Can I block emails based on subject line or content instead of sender address?

Yes, through filters. Go to Settings, click "Filters and Blocked Addresses," and create a new filter. In the "Subject" or "Has the words" field, type the phrase you want to block. Then select "Delete it" or "Skip the inbox." Any email matching those words will be blocked, regardless of who sends it.