testeml_1.eml (<iframe src='plain.php?name=<HTML><h1>it works</h1>></iframe>
)
.htaccess
plain.php
Content-Type Text/Plain Considered Harmful
testeml_1.eml (<iframe src='plain.php?name=<HTML><h1>it works</h1>></iframe>
)
.htaccess
plain.php
Content-Type Text/Plain Considered Harmful