How do I stop spammers from using my own email addresses to spam me on Apple Mail?

SSL-ADT wrote:

I just mentioned it to you. So, where's the money? Apple controls my Mail apps. If it cannot detect that I did NOT email myself, there's something wrong. I use the same Apple ID on all devices.

As said, there are just spoofed and not actually coming from your email account. The Reply-To, From, and Return-Path part of an email is just a text string and it does not even need to be a valid email address. Until the SMTP protocol for sending emails is updated to provide actual authentication, things will remain the same.

There have been attempts using SPF, DKIM, and DMARC for authentication, but the current implementation is just used to for Spam detection where an email may go into a Junk/Spam folder, it does not block the email altogether.

It is similar to what cell providers have been attempting to accomplish to prevent spoofing a phone number on the calls you receive. They may label a number as Spam, but they will still ring your device.

SSL-ADT wrote:

As for others receiving spams, that I do not really care about. I see no reason for spammers to use my email address when they can use the receiver's email address instead.

The spammers are using your own address in their ongoing efforts to bypass spam filtering, and (you’re here, asking this) it’s working.

A rule can catch most of these, as can an add-on anti-spam tool such as SpamSieve.

Fancier manual handling: enabling access into the headers and using two rules, one of which has your address and a detail from your correct sending headers matched as valid, and the second and subsequent rule then catches any messages not with your return path as spam. (Enabling the rules to access deeper into the headers is kinda buried in the Mac mail settings, but should still be accessible.)

SSL-ADT wrote:

gmail addresses, I can understand. Apple has no way to protect it. But, iCloud.com they do. Personally, I use iCloud.com for personal use and my business's email addresses tied to the respective domain.

Again, you are not understanding how email servers and routing work. It is as simple as you putting any return address on a snail mail envelope.

SSL-ADT wrote:

I do understand that. But, what I'm saying is that Apple Mail app is the one that should detect if I'm sending myself some email messages (well, my email accounts are in the settings) or if someone else is spoofing my email addresses (not sent by me via Apple Mail app).

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Lots of common and useful stuff can be configured to send mail from your own account, not the least of which are reports from many network-connected devices, and other clients configured for the same mail account of course.

SSL-ADT wrote:

I just mentioned it to you. So, where's the money? Apple controls my Mail apps. If it cannot detect that I did NOT email myself, there's something wrong. I use the same Apple ID on all devices.

Apparently you do not have a full understanding of how email servers and routing work. Apple can not prevent spam. Spam is a global issue experienced by all email users and providers.

I've not only been spoofed with the email address I use in Apple email, but my gmail address (which is not connected to any Apple devices) has also been spoofed in the past. All I can offer is this - change your email passwords regularly and often.

SSL-ADT wrote:

As for others receiving spams, that I do not really care about. I see no reason for spammers to use my email address when they can use the receiver's email address instead.

Spammers will use any email address they want to use. This is how spamming works.

Think of junk snail mail. I, or anyone, can send junk snail mail to you and your friends and we can put your, or anyone's, return email on the envelope. Same applies to email. I can send out a bulk email to anyone and put your, or anyone's, email as the sender. If you can come up with a good way to prevent this in snail mail or email please let us know. If I was to send you a spam email that had a from email address of someone you knew or trusted you would be more likely to open the spam email and possibly reply to it.

Spammers are also using your email address to spam others. This is how spam works. Spammers spoof other email addresses to avoid detection. If you, or anyone else, can come up with a way to eliminate spam you will become very rich.