Hello, World!<\/h1>\n

This is a test email sent using PHP.<\/p>\n<\/body>\n<\/html>\n\";\n\n\/\/ To send HTML mail, the Content-type header must be set\n$headers[] = 'MIME-Version: 1.0';\n$headers[] = 'Content-type: text\/html; charset=iso-8859-1';\n\n\/\/ Additional headers\n$headers[] = 'To: Recipient ';\n$headers[] = 'From: Sender Name ';\n\n\/\/ Mail it\nmail($to, $subject, $message, implode(\"\\r\\n\", $headers));\n?><\/pre>

This code snippet is straightforward, but it's just the tip of the iceberg. As you delve deeper, you'll encounter various challenges and opportunities to optimize your email sending process.<\/p>

One of the first hurdles you might face is dealing with different email clients. Not all clients render HTML the same way, and some might strip out your carefully crafted styles. To combat this, you'll need to adopt a mobile-first approach, use inline CSS, and test your emails across multiple platforms. Here's an example of how you can inline your CSS:<\/p>

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