In some earlier versions of hostware, the outgoing emails from hostware when answering a ticket can contain html code. The fix is a small change in the email templates of hostware.
Navigate to Settings > Email Templates and edit both templates "Ticket Created Admin" and "Ticket Answered".
In the tab "text snippets", wou will propably somewhere find the following string to output the ticket message:
{{ $ticketMessage->message }}
This must be changed to the following:
Essentially change {{ to {!! and }} to !!} to enable HTML output. After this change, the mail contain HTML code.