The fastest way to block someone in Gmail

Open the email from the person you want to block. Click the three dots menu in the top right of the message, then select "Block [sender's name]". Gmail will immediately send their future emails to spam and hide any messages already in your inbox from that sender.

If you cannot find the three-dot menu, look for a downward arrow next to the "Reply" button instead — older Gmail layouts use that icon. The block option appears in the dropdown menu.

Once you block someone, you will not see their emails in your inbox, and they will not receive a notification that you blocked them. If you change your mind later, you can unblock them through Gmail settings.

Key Takeaways

  • Blocking a sender takes one click from any of their emails: open the message, click the three-dot menu, and select "Block [name]".
  • Blocked senders' emails go to spam automatically, and their past messages disappear from your inbox view.
  • You can block email addresses that do not match a contact name, and you can block multiple addresses from the same person.
  • Unblocking happens in Gmail settings under "Filters and Blocked Addresses" if you need to restore contact with someone.

Blocking an email address that is not in your contacts

If the email came from an address you do not recognize or that is not saved as a contact, the block process is identical. Open the email, click the three-dot menu, and select "Block [email address]". Gmail blocks the exact address shown, not a domain or pattern.

This matters when someone uses multiple email addresses. If a person emails you from both john.smith@gmail.com and jsmith@work.com, blocking one address does not block the other. You will need to block each address separately as emails arrive from them.

Blocking multiple addresses from the same person

When someone contacts you from several different email addresses, you can block each one individually as they arrive. Open each message, click the three-dot menu, and block that specific address.

If you want to block all addresses at once, go to Gmail settings, select the "Filters and Blocked Addresses" tab, and scroll to the "Blocked addresses" section. You can see all the addresses you have blocked and add new ones manually by typing the address and clicking "Block".

What happens after you block someone

All emails from a blocked sender go straight to your spam folder. You will not see notifications for their messages, and they will not appear in your inbox or other folders. The emails still exist in your spam folder — they are not deleted — so you can review them later if needed.

Any emails from that sender that were already in your inbox before you blocked them will disappear from your inbox view. They move to spam along with future messages. If you search for the sender's name or address, Gmail will show you all their messages in the spam folder.

Unblocking an address you blocked by mistake

Go to Gmail settings by clicking the gear icon in the top right, then select "See all settings". Click the "Filters and Blocked Addresses" tab and scroll down to find the "Blocked addresses" section.

You will see a list of every address you have blocked. Find the one you want to unblock and click the "Unblock" button next to it. That address can now email you normally again, and their messages will no longer go to spam automatically.

Blocking versus reporting spam

Blocking and reporting spam are different actions. When you block someone, only their emails stop reaching your inbox — Gmail does not use your block to filter spam for other users. When you report an email as spam, you tell Gmail the message is unwanted, and Gmail uses that information to improve spam detection for everyone.

If you receive unwanted marketing emails or scams, reporting them as spam is more effective than blocking, because it helps Gmail recognize similar messages from other senders. You can report an email as spam by opening it, clicking the three-dot menu, and selecting "Report spam". The message goes to spam, and Gmail learns from it.

For personal contacts you want to avoid, blocking is the right choice. For unsolicited bulk email or scams, reporting spam is more helpful.

Frequently Asked Questions

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

Gmail does not have a built-in feature to block all addresses from a domain at once. You can only block individual email addresses. If you receive emails from multiple addresses at the same domain, you will need to block each one separately as they arrive, or create a filter rule in settings to send all mail from that domain to spam.

Will the person I blocked know that I blocked them?

No. When you block someone, they do not receive any notification. Their emails will bounce back to them as undeliverable after a delay, but Gmail does not tell them you blocked them specifically. From their perspective, it may look like your email is not working.

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

Blocking works only by sender address. To filter emails by subject line or keywords, you need to create a filter rule in Gmail settings instead. Go to "Filters and Blocked Addresses", click "Create a new filter", and enter the subject or keywords you want to catch. You can send those emails to spam or another folder automatically.

What if someone is harassing me through email?

Blocking stops their emails from reaching you, but if the harassment is serious, you may want to report it to Gmail and keep records. Open the email, click the three-dot menu, and select "Report phishing" or "Report spam" depending on the type of message. You can also contact local law enforcement if the harassment involves threats.