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 corner of the email. Select "Block [sender's name]" from the dropdown menu. Gmail will move all future emails from that address to spam and won't notify you when they arrive.

That's the complete process — it takes about five seconds. Once you block someone, you won't see their emails in your inbox, and they won't know you've blocked them. If you change your mind later, you can unblock them through Gmail settings.

Key Takeaways

  • Blocking an email address in Gmail takes three clicks: open the email, click the three-dot menu, and select "Block [sender]".
  • Blocked emails go to your spam folder automatically, and Gmail stops sending you notifications about them.
  • You can block multiple addresses one at a time, or block an entire domain if emails keep coming from different addresses at the same company.
  • Unblocking someone is just as straightforward — go to Settings, find the blocked addresses list, and click "Unblock" next to their name.
  • Blocking is different from unsubscribing; unsubscribe removes you from a mailing list, while blocking stops all mail from that sender.

Blocking emails from a domain instead of a single address

If you're getting unwanted emails from multiple addresses at the same company or domain, blocking each one individually is tedious. Instead, you can block the entire domain so that any email from anyone at that organization goes straight to spam.

To do this, open any email from that domain, click the three-dot menu, and select "Block [domain name]". Gmail will then filter out all future emails from any address ending in that domain. This is useful when you're dealing with repeated spam from a large organization or when someone keeps creating new email addresses to contact you.

Finding and unblocking addresses you've blocked

Gmail keeps a list of every address and domain you've blocked. To see this list, click the gear icon in the top right of Gmail and select "See all settings". Go to the "Filters and Blocked Addresses" tab, and scroll down to the "Blocked addresses" section.

Your blocked senders appear in a list with an "Unblock" button next to each one. Click "Unblock" to remove someone from your blocked list. Once you unblock them, their emails will no longer go to spam automatically, though they may still be caught by Gmail's regular spam filters if they look suspicious.

The difference between blocking, unsubscribing, and marking as spam

Blocking stops all emails from a specific address or domain. The sender has no way to know you've blocked them, and their emails go to spam. Use this when you want to completely cut off contact from someone.

Unsubscribing removes you from a mailing list — usually newsletters, promotional emails, or notifications from services you signed up for. Most legitimate marketing emails have an "Unsubscribe" link at the bottom. Clicking it tells the sender to stop sending you emails, but it doesn't block them; if they send you something else later, you'll see it.

Marking as spam tells Gmail that an email looks suspicious or unwanted, but it doesn't block future emails from that sender. Gmail learns from your spam reports and may filter similar emails automatically, but the sender can still reach you. Use this for one-off unwanted emails rather than ongoing contact you want to stop.

What happens to blocked emails

When you block someone, their emails go directly to your spam folder. You won't see a notification, and Gmail won't show a count of unread messages from blocked senders. The emails stay in spam for 30 days before Gmail deletes them automatically.

If you need to check whether a blocked sender has tried to contact you, you can look in your spam folder at any time. Open Gmail, click "More" in the left sidebar, and select "Spam". You'll see all emails that Gmail has filtered, including those from blocked addresses. If you accidentally blocked someone important, you can unblock them from this view or from your settings.

Blocking emails on Gmail's mobile app

The process on the Gmail app for iPhone or Android is nearly identical. Open the email you want to block, tap the three dots in the top right corner, and select "Block [sender]". The app will confirm that the sender has been blocked.

To unblock someone on mobile, open Gmail settings (tap the menu icon, then "Settings"), select your account, scroll to "Blocked addresses", and tap "Unblock" next to the name. Changes you make on mobile sync when ready with Gmail on your computer, so blocking someone on your phone blocks them on all your devices.

When blocking might not be enough

Blocking works well for individual senders, but it has limits. If someone is harassing you from multiple new addresses, blocking each one individually becomes impractical. In this case, consider blocking the entire domain if all the addresses come from the same organization, or use Gmail's filters to automatically delete emails containing specific words or phrases.

For serious harassment or threats, blocking alone may not be sufficient. Gmail's "Report phishing" and "Report spam" options send information to Google's abuse team, which can help identify patterns of harassment. If you're being threatened or stalked, save copies of the emails and consider reporting the behavior to local law enforcement or the platform where the person contacted you initially.

Frequently Asked Questions

Can someone tell if I've blocked them?

No. When you block someone, Gmail doesn't send them a notification. Their emails straightforward go to spam, and they have no way to know you've blocked them unless they try to contact you through another method and you tell them directly.

Will blocking someone delete their old emails?

No. Blocking only affects future emails. Any emails from that sender that are already in your inbox, archive, or other folders stay where they are. Only new emails from blocked senders go to spam automatically.

What if I block someone by mistake?

Go to Gmail Settings, click the "Filters and Blocked Addresses" tab, find the address in the "Blocked addresses" section, and click "Unblock". Once you unblock them, their future emails will no longer be automatically sent to spam.

Can I block emails based on subject line or content?

Blocking targets specific addresses or domains, not content. To filter emails by subject or keywords, use Gmail's filter feature: go to Settings, click "Filters and Blocked Addresses", and select "Create a new filter". You can then automatically delete, archive, or label emails matching certain words.

Does blocking on Gmail also block them on other Google services?

No. Blocking someone in Gmail only affects email. If you want to block them on YouTube, Google Meet, or other Google services, you need to block them separately in each service.