Laravel 5 adding HTML to email

You need to specify html key in the first parameter:

Mail::send( ['html' => 'emails.newinvoice'], ['text' => $emailtext], 
//           ^^^^

Also replace auto-escaped block {{ }} with unescaped {!! !!} in the template:

<p> {!! $text !!} </p>

You need to use:

{!! $text !!}

instead of

{{ $text }}

Blade automatically escapes any html when echoing unless you explicitly tell it not to.