Questions about image display in email-php Tutorial

Is there a way to ensure that the images in the email are directly displayed by default? You do not need to click "allow download" or "show image ".
I don't think so ..

Reply to discussion (solution)

If the email has been sent in html format, the server does not set some anti-Leech settings for the image, which can be directly displayed in most cases.

If the email has been sent in html format, the server does not set some anti-Leech settings for the image, which can be directly displayed in most cases.

Except for leeching, the client directly does not display images, even embed.
What I want is whether images are always displayed, bypassing client blocking, or is there any way for the recipient to trust my emails directly?

The setting of the email website requires Image Display, which is not needed by the sender.
For example, gmail needs to display images, and 21cn does not.

The setting of the email website requires Image Display, which is not needed by the sender.
For example, gmail needs to display images, and 21cn does not.

Well, I think so.