Sendmail Sample Usage
mail.txt:
MIME-Version: 1.0
Content-Type: text/html
From: newsletter@shopbah.com
Subject: TESTING 123 hehehe
<html><head><title>TESTING ONLY BAH</title></head>
<body>
<strong>Content line</strong> 1
<strong>Content line</strong> 2
<strong>Content line</strong> 3
</body></html>
* sendmail address@example.com < mail.txt
No Comments