The fastest way to block an email sender in Gmail

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

That single action does three things at once: it sends future emails to your spam folder automatically, it removes all past emails from that sender out of your inbox (you can still find them in spam if you need to), and it prevents that sender from knowing you read their message or when you read it.

If you change your mind later, you can unblock the sender by going to Settings, clicking the Filters and Blocked Addresses tab, finding the blocked address, and clicking Unblock next to it.

Key Takeaways

  • The block button is in the three-dot menu on any email — one click sends that sender to spam permanently.
  • Blocking removes past emails from your inbox but keeps them in spam if you need to retrieve them later.
  • You can block multiple addresses from the same person if they use different email accounts.
  • Gmail's spam filter learns from what you mark as spam, so reporting unwanted mail trains it to catch similar messages automatically.
  • You can unblock any sender at any time from your Settings page.

Blocking multiple addresses from the same sender

Some senders use different email addresses to get around blocks. If someone keeps contacting you from new addresses, block each one individually as it arrives. Gmail does not have a way to block by domain name (like blocking everyone at "example.com"), but blocking the specific addresses stops the ones you actually receive.

If a sender is using many different addresses, marking their emails as spam instead of blocking them can be more effective. Gmail's spam filter learns patterns and may catch new addresses from the same sender automatically. After you mark three or four emails as spam, Gmail often catches the next ones without your help.

Using Gmail filters to block emails before they arrive

Filters let you handle unwanted emails automatically without seeing them first. Go to Settings, click Filters and Blocked Addresses, then click Create a New Filter. Type the sender's email address (or part of it) in the "From" field. Click Create Filter, then check the box next to "Skip the Inbox (Archive)" or "Delete it" depending on how final you want to be.

Filters are more powerful than blocking because you can filter by subject line, keywords in the body, or even emails from a whole domain. For example, you could create a filter that catches any email with "unsubscribe" in the subject line, or any message from addresses ending in "@unwanteddomain.com". Once a filter is set, matching emails go straight to spam or trash without cluttering your inbox.

The difference between a filter and a block: a block is instant and one-click, but only works on addresses you have already received mail from. A filter takes thirty seconds to set up but can catch emails before they ever reach your inbox, and it can target patterns instead of just exact addresses.

Marking emails as spam instead of blocking

If you are not sure whether you want to block someone permanently, mark their email as spam first. Click the trash icon at the top of the email, then click "Report spam" when the option appears. This sends the email to your spam folder and tells Gmail's filter that similar messages are unwanted.

Marking as spam is gentler than blocking because the sender can still reach you if they send from a different address or if you change your mind. It also trains Gmail's filter to recognize similar unwanted emails from other senders. After you report a few emails with the same characteristics, Gmail starts catching them automatically.

Unsubscribing from mailing lists instead of blocking

If the email is from a legitimate mailing list or newsletter you signed up for, unsubscribing is better than blocking. Scroll to the very bottom of the email and look for an "Unsubscribe" link. Click it and follow the steps to remove yourself from the list. This tells the sender you do not want future emails, and most legitimate companies honor the request within a few days.

Blocking works too, but unsubscribing is the proper way to stop newsletters because it tells the sender you opted out rather than marking them as spam. If you block a newsletter sender, they may not know why you stopped receiving their emails, and you might miss important information if the list is from a service you actually use.

What happens when you block someone in Gmail

When you block a sender, Gmail moves all their past emails out of your inbox and into spam. You will not see notifications when they send you new messages. If they reply to one of your emails, the reply goes straight to spam. They will not know they are blocked — Gmail does not send them a notification, and read receipts are disabled so they cannot tell if you opened their message.

The blocked sender can still send you emails; they just land in spam instead of your inbox. If you ever need to read an old email from them, you can find it in your spam folder. Blocking is not the same as deleting — the emails stay in spam for 30 days before Gmail deletes them automatically.

Recovering emails from a blocked sender

If you blocked someone and later realized you needed to read their emails, go to your spam folder and search for their address. Click on any email from them, then click the "Not spam" button at the top. This moves that email back to your inbox and unblocks the sender. You can also unblock them from Settings without moving the emails back.

Once you unblock a sender, their future emails will go to your inbox again. If you want to keep them unblocked but move their old emails back to your inbox, click "Not spam" on individual messages instead of unblocking them globally.

Frequently Asked Questions

Can a blocked sender tell that I blocked them?

No. Gmail does not notify blocked senders, and read receipts are automatically disabled so they cannot see when or if you open their messages. They will only know if they notice their emails are not getting replies or if they check their spam folder on their own.

What is the difference between blocking and marking as spam?

Blocking is permanent and one-click — it sends all future emails from that sender to spam. Marking as spam trains Gmail's filter to catch similar emails but does not block the sender. You can still receive emails from them if they send from a different address or if you change your mind.

If I block someone, can they still see my emails?

Yes. Blocking only affects emails they send to you. If you have already sent them messages, they can still read those. If you send them a new email after blocking them, it goes through normally — blocking is one-way only.

Can I block an entire domain instead of individual addresses?

Gmail does not have a built-in domain block, but you can create a filter that catches all emails from a domain. Go to Settings, create a new filter, and type "@unwanteddomain.com" in the From field. Set it to skip your inbox or delete automatically.

How long do blocked emails stay in my spam folder?

Gmail keeps emails in spam for 30 days before deleting them automatically. If you need to recover an email from a blocked sender, retrieve it from spam within that window. After 30 days, it is deleted permanently.