[Plugin: WP Email Guard] email with dot not recognized

Here’s an adjusted function which handles email addresses like the one you describe.

function WPMailGuard_content_filter($content){

		$pattern = '/mailto:([A-Z0-9\.-]+)@(\w+)\.(\w+)/i';
			$replacement = '<script>MailGuard(\'${1}\',\'${2}.${3}\')</script>';
		$content=preg_replace($pattern, $replacement, $content);

		$pattern = '/([A-Z0-9\.-]+)@(\w+)\.(\w+)/i';
			$replacement = '<script>MailGuard(\'${1}\',\'${2}.${3}\')</script>';
		$content=preg_replace($pattern, $replacement, $content);

		return $content;

	}