The fastest way to block an email sender
The method depends on which email service you use, but all three major platforms — Gmail, Outlook, and Apple Mail — let you block a sender in one or two clicks from the message itself. You do not need to dig through settings. Open the email from the person you want to block, find the block option (usually a three-dot menu or a "More" button), and select it. The sender's future emails will go straight to spam or a blocked folder.
What "blocking" actually does varies slightly by service. In Gmail, blocked senders go to spam automatically. In Outlook, they go to a junk folder. In Apple Mail, they move to a separate blocked senders list. In all cases, you will not see their emails in your inbox, but the messages still arrive on the server — they are just hidden from you. If you change your mind, you can unblock the sender later.
Key Takeaways
- Gmail, Outlook, and Apple Mail all have a block option in the email menu; you do not need to find a settings page.
- Blocked emails go to spam or junk automatically, but you can still see them if you check those folders.
- Blocking a sender does not delete their past emails — only stops new ones from appearing in your inbox.
- You can unblock a sender at any time by finding them in your spam or junk folder and selecting unblock.
- If someone uses multiple email addresses, you will need to block each address separately.
How to block a sender in Gmail
Open the email from the person you want to block. Click the three vertical dots (the menu icon) in the top right corner of the email. A dropdown menu will appear with several options. Select "Block [sender's name]" from that menu.
Gmail will move that sender's current and future emails to your spam folder automatically. If you want to see what Gmail blocked, you can visit your Spam folder anytime. To unblock the sender later, open the Spam folder, find an email from them, click the three dots again, and select "Unblock [sender's name]".
How to block a sender in Outlook
Open the email from the person you want to block. Look for the "Junk" button in the toolbar at the top of the message — it usually has a trash can icon. Click the small arrow next to it to see more options. Select "Block Sender" from the dropdown menu.
Outlook will send that sender's emails to your Junk folder from that point forward. To reverse this, go to your Junk folder, right-click an email from the blocked sender, and choose "Block Sender" again to toggle it off. You can also manage your blocked senders list by going to Settings, then Mail, then Junk Email, where you will see a "Blocked Senders" tab.
How to block a sender in Apple Mail
Open the email from the person you want to block. Click the "Mail" menu at the top of your screen, then select "Block Sender" from the dropdown. A confirmation window will appear asking if you are sure — click "Block" to confirm.
Apple Mail will move that sender's emails to a separate folder and will not show them in your inbox. To see your blocked senders or unblock someone, go to Mail in the top menu, then Preferences, then Junk Mail. Click the "Blocked" tab to see a list of everyone you have blocked. Select a sender and click the minus button to unblock them.
What happens to emails after you block a sender
Blocking a sender does not delete their old emails — it only affects new messages. Any emails from that person that arrived before you blocked them will stay in your inbox unless you delete them manually. If you want to clean up, you can search for that sender's name, select all their emails, and delete them.
New emails from a blocked sender will arrive on the email server but will be sorted into spam or junk automatically. You can still read them if you check those folders, so blocking is not the same as permanently deleting messages. This is useful if you want to block someone but keep the option to review their messages later without them appearing in your main inbox.
When blocking does not work: multiple email addresses
If someone is contacting you from different email addresses, blocking one address will not stop the others. You will need to block each address separately as emails arrive from them. There is no way to block an entire person or domain name in Gmail, Outlook, or Apple Mail — only individual email addresses.
If you are being contacted repeatedly from many different addresses, consider creating a filter or rule instead of blocking individual senders. In Gmail, you can create a filter that catches emails containing certain words or phrases. In Outlook, you can set up a rule that moves emails to junk based on sender information. These tools give you more control when one person is using multiple addresses.
How to unblock a sender you blocked by mistake
If you blocked someone and want to receive their emails again, the process is straightforward. Go to your spam or junk folder, find an email from that sender, and look for an unblock option. In Gmail, click the three dots and select "Unblock." In Outlook, right-click the email and choose "Block Sender" again to toggle it off. In Apple Mail, go to Mail Preferences, click the Blocked tab, select the sender, and click the minus button.
Once you unblock a sender, their future emails will go to your inbox normally again. Old emails from them that were in your spam or junk folder will not automatically move back to your inbox — you can move them manually if you want to keep them.
Frequently Asked Questions
Can a blocked sender tell that I blocked them?
No. When you block someone, they do not receive any notification. Their emails still go through to the email server, but you do not see them. From their perspective, they have no way to know whether you blocked them, deleted their emails, or straightforward did not respond.
If I block someone, can they still see emails I already sent them?
Yes. Blocking only affects incoming emails from that sender. Any messages you sent them before blocking remain in their inbox. Blocking is one-way — it does not change anything on their end.
What is the difference between blocking and unsubscribing?
Unsubscribing removes you from a mailing list, usually for newsletters or marketing emails. Blocking prevents all emails from a specific sender from reaching your inbox. If an email has an unsubscribe link, that is usually the better choice for unwanted newsletters. Blocking is better for unwanted personal emails or spam from unknown senders.
Will blocking stop emails from a company if they use multiple sender addresses?
No. If a company sends emails from different addresses, you will need to block each one separately. Some companies use different addresses for different departments or purposes. If you want to block all emails from a company, you may need to create a filter rule instead, which can catch emails based on domain name or other criteria.
Can I block emails based on subject line or content instead of sender?
Blocking is always based on the sender's email address. If you want to filter based on subject line or content, you will need to create a filter or rule instead. Gmail calls this a "filter," Outlook calls it a "rule," and Apple Mail calls it a "rule." These tools let you automatically sort or delete emails based on words, phrases, or other criteria.