Blocking an email address in Gmail stops messages from that sender reaching your inbox

When you block someone in Gmail, their messages skip your inbox and go straight to spam. You won't see notifications for their emails, and they won't know they're blocked — Gmail doesn't tell senders their messages were blocked. The block stays in place until you remove it, and it applies across all Gmail devices and browsers you use with that account.

Blocking is different from unsubscribing. Unsubscribe removes you from a mailing list (usually marketing emails with an unsubscribe link). Blocking stops all mail from a specific address, whether or not they have an unsubscribe option. If you're dealing with repeated unwanted mail from a person or organization, blocking is the faster route.

Key Takeaways

  • Open any email from the sender you want to block, click the three-dot menu, and select "Block [sender]" — Gmail will move that message and all future ones to spam.
  • Blocked senders' emails go to your spam folder automatically, so you can still find them if you need to later.
  • Blocking only works on the exact email address you block; if someone uses a different address, those messages won't be blocked.
  • You can unblock a sender anytime by going to Gmail settings, finding them in your blocked addresses list, and clicking unblock.
  • If you're getting mail from multiple addresses from the same organization, you may need to block each one separately or use a filter instead.

The three-dot menu is the fastest way to block

Open any email from the person or organization you want to block. Look for the three vertical dots (⋮) in the toolbar at the top right of the email. Click it, and you'll see a menu with several options. Select "Block [sender's name or address]" — the exact wording depends on whether Gmail recognizes the sender's name.

Gmail will immediately move that email to spam and set up the block. Any future emails from that address will land in spam automatically. You'll see a confirmation message at the top of your inbox saying the sender has been blocked.

What happens to blocked emails

Blocked emails go to your spam folder, not deleted. This matters if you ever need to find one — you can still search your spam folder and read the message. Gmail keeps spam for 30 days before deleting it automatically, so you have a window to recover something if you blocked by mistake.

You won't get notifications when a blocked sender emails you. No badge on the Gmail app, no sound, nothing. The message simply arrives in spam silently. This is useful if someone is harassing you — you can block them and not be reminded of their attempts to contact you.

Blocking only works for one exact address

If you block john@example.com, emails from john.smith@example.com or john@work.example.com won't be blocked — they're technically different addresses. This is a limitation worth knowing about if you're dealing with someone who has access to multiple email accounts or if a company sends from several addresses.

If you're getting unwanted mail from multiple addresses at the same domain (like newsletter@company.com and support@company.com), you have two options: block each address individually, or create a filter that catches all mail from that domain. Filters are more powerful but require a few more steps in settings.

How to unblock a sender if you change your mind

Go to Gmail settings by clicking the gear icon in the top right corner of your inbox, then select "See all settings." Click the "Filters and Blocked Addresses" tab. Scroll down to the "Blocked addresses" section — you'll see a list of everyone you've blocked.

Find the address you want to unblock and click "Unblock" next to it. The block is removed immediately. That sender's future emails will go to your inbox normally again, and any messages already in spam will stay there (they won't move back to your inbox automatically).

When blocking isn't enough

If you're getting mail from many addresses or from addresses that change, blocking individual senders becomes tedious. In those cases, a filter works better. Filters can catch emails based on keywords in the subject line, sender domain, or message content — so you can filter all mail containing "unsubscribe me" or all mail from anyone@spamcompany.com without blocking each address one by one.

You can also use the "Report spam" option instead of blocking. When you report an email as spam (three-dot menu, then "Report spam"), you're telling Gmail's spam detection system that this type of message is unwanted. This helps Gmail learn and filter similar messages for all users, though it doesn't block the specific sender the way blocking does.

Blocking doesn't prevent someone from knowing your email works

Blocking stops you from seeing their messages, but it doesn't tell the sender their email bounced or was rejected. From their perspective, the email was delivered successfully. If you're trying to signal to someone that you don't want contact, blocking alone won't do that — you may need to send a message first saying you don't want further communication.

If you're dealing with harassment or threats, blocking is a practical first step, but consider reporting the behavior to Gmail (use the report spam option) and to the relevant authorities if the situation is serious. Gmail's abuse team can take action on accounts that violate their policies.

Frequently Asked Questions

Can I block an email address without opening a message from them?

Not directly from the inbox list. You need to open at least one email from that sender to access the block option. If you haven't received a message from them yet, you can't block them preemptively. However, you can create a filter in settings that will automatically send future mail from that address to spam without opening anything.

Will the person I blocked know I blocked them?

No. Gmail doesn't notify senders when they're blocked. Their emails will appear to send successfully from their end. They'll only realize something is wrong if they notice you're not responding and they try to contact you through another method.

What if I blocked someone by accident?

Go to settings, click "Filters and Blocked Addresses," find the address in the blocked list, and click unblock. Their future emails will go to your inbox normally. Emails already in spam will stay there, but you can manually move them back to your inbox if you need them.

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

Blocking only works on individual addresses. To block all mail from a domain (like everyone@company.com), create a filter instead. In settings under "Filters and Blocked Addresses," click "Create a new filter," enter the domain in the "From" field, and choose to skip inbox or delete automatically.

Does blocking on my phone block the same sender on my computer?

Yes. Blocking is tied to your Gmail account, not your device. When you block someone on your phone, that block applies to Gmail on your computer, tablet, and any other device where you're signed in with the same account.