Оставлю здесь, как изменить шаблон письма, может кому пригодится...
CSS письма можно редактировать здесь:
administrator/components/com_foxcontact/layouts/fox/user_email_tmpl.css
А эти теги используются при формировании письма
{date} The date in the server's timezone. The format depends on the current language.
{time} The time in the server's timezone 'hh:mm'
{user} If the submitter is logged on as a registered user, this is their username.
{id} A unique id, the same as the 'id' field in the database enquiries that can be exported to CSV
{name} The submitter's name
{email} The submitter's email address
{dropdown0}Note 1 The selected value of the first dropdown list
{dropdown1} The second dropdown. And {dropdown2} etc...
{text0}Note 1 Text as entered into the first text field
{text1} The second text field. And {text2} etc...
{checkbox0}Note 1 The state of the first checkbox. This will be either 'Yes' or 'No'
{checkbox1} The second checkbox. And {checkbox2} etc...
{textarea0} The first textarea. And {textarea1} etc...
{calendar0} The first date/time field. And {calendar1} etc...
{field-table-full} All the fields present in the current form, including attachments list and client information
{field-table-without-client-info} All the fields present in the current form, except for client information
{field-table-without-attachments} All the fields present in the current form, except for the attachments
{field-table} Without the attachments list and client information
{sitename} The name of the website as defined under Joomla Global Configuration
{page-title} The HTML title of the page where the form is
{current-url} The URL of the page where the form is
{attachments} The list of attachments
{client-ip-address} The IP of the client, with GeoIP information if available