How can the lack of proper PHP syntax affect the delivery and display of HTML emails?

If there is a lack of proper PHP syntax in the code used to generate HTML emails, it can result in errors that prevent the email from being delivered or displayed correctly. To solve this issue, ensure that all PHP syntax is correct and properly structured to generate valid HTML content for the email. 

// Example of correct PHP syntax for generating HTML email content
$html_content = "<html><body><h1>Hello, world!</h1></body></html>";

Keywords

PHP syntax HTML emails delivery display error detection

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