"BLOCK CONTACT function in Mail. Shouldn't it bounce the email back so I don't see it at all?

"BLOCK CONTACT" in MAIL

it never seems to work. I constantly get an email from the same address that I have BLOCKED, but it always arrives in the Junk Mail folder anyway. The function never seems to work.

If it's been blocked, shouldn't it just bounce back to the sender, so that I don't see it at all? How does it actually work?


Thank you ~

MacBook Pro 15″, macOS 15.7

Posted on Feb 1, 2026 10:04 AM

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Posted on Feb 1, 2026 10:28 AM

Blocked emails are sent to your Junk folder and you are not notified when you receive an email from a blocked contact. You can identify the blocked contact by the red circle with a line through it seen in your Junk folder making deletion that much easier or you can have your server settings delete emails in the Junk folder automatically after a period of time.


They are not bounced back to the sender and you will see the whole concept of "bouncing" an email as Spam control becoming non existent, because the sending address is just "spoofed" and has no effect. The only thing it did was give the user a false belief that they were doing something to stop spam. Also the forged Return-Path of an email could be bounced to an innocent third party.

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Question marked as Top-ranking reply

Feb 1, 2026 10:28 AM in response to 24Golfer

Blocked emails are sent to your Junk folder and you are not notified when you receive an email from a blocked contact. You can identify the blocked contact by the red circle with a line through it seen in your Junk folder making deletion that much easier or you can have your server settings delete emails in the Junk folder automatically after a period of time.


They are not bounced back to the sender and you will see the whole concept of "bouncing" an email as Spam control becoming non existent, because the sending address is just "spoofed" and has no effect. The only thing it did was give the user a false belief that they were doing something to stop spam. Also the forged Return-Path of an email could be bounced to an innocent third party.

Feb 1, 2026 7:26 PM in response to 24Golfer

24Golfer wrote:

Oh I see. What if it's a real email address, not a spoofed one? Like, an old contact I'm ghosting and don't want to receive anything from them, shouldn't they see that they are being bounced with a message that says the "Email address doesn't exist" or something?


Blocked contacts don’t get replies, and don’t get bounce messages. The messages disappear. Lots of mail servers silently discard mis-routed messages too, and for various reasons including misconfigurations, broken forwarding, and because way too many folks will fake the return address as a means of harassing the real owner of the faked return.

Feb 1, 2026 7:18 PM in response to 24Golfer

24Golfer wrote:

Oh I see. What if it's a real email address, not a spoofed one? Like, an old contact I'm ghosting and don't want to receive anything from them, shouldn't they see that they are being bounced with a message that says the "Email address doesn't exist" or something?

No that is now how it works. The same is true if they sent you a Message or called you, in either case they will have no idea that you blocked them. That is for your own personal privacy to not disclose that information to anyone else.

"BLOCK CONTACT function in Mail. Shouldn't it bounce the email back so I don't see it at all?

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