How do you embed images (JPEG) into an Apple Mail message so it REMAINS embedded in Gmail, instead of images becoming attachments?

jeffsyrop wrote:

No, Omnis is hosting my own website and email, zenhell.com.

Then that is the most likely culprit. Your original screenshot is from the gmail web interface, correct? Can you confirm that it looks correct inside Mail in your "sent" mailbox?

If so, then it is likely the email service. I did a quick check of Omnis and this web page says:

Important information about specific attachments: as a security measure to prevent potential viruses, Omnis doesn't allow you to send or receive executable files (such as files ending in .exe). Executable files can contain harmful code that might cause malicious software to download to your computer. You can't send or receive the following file types: .exe, .com, .bat, .scr, .pif, .cmd, etc, even in ZIP or RAR archives. In case of blocking, you will see a message like: "Virus scan failed: Omnis.ExecutableFileBlocked.Zip_exe FOUND".

And I think that confirms it. They are scrambling your outgoing e-mail. Here's a dirty little secret if you didn't already know. Internet services can do one of two things well - either web services or e-mail service. Nobody does both well. These days, I'm not sure anyone can do either. I have noticed a remarkable decrease in basic competency with respect to shared web hosting providers. 15 or 20 years ago, you could have some company host your website and e-mail and there was never any problem. That's simply not possible anymore. They just can't seem to manage it.

I'm moving all my sites over to AWS CloudFront. I have some peculiar requirements with language support, but I've figured out a way to get it working the way I want for the most part. Most people wouldn't have this problem. You can use AWS Lightsail just to get your feet wet with a VPS-style service. I'm getting tired of dealing with the SSL certificates. They are quickly going the way of the web host. I much prefer the free, one-click AWS certificates.

For e-mail, I use Office 365 because I can use my own domain. You can even do that with iCloud now. There are a handful of email service providers that offer comparable services. But the same rules apply. People who do e-mail well couldn't do a web site to save their lives. I would have said the opposite for people who do web hosting but no one seems to be able to do that anymore anyway, so it's a moot point.