How can I insert html code on sending letters to registered users?

Question

Since the arrival in the mail a letter showing html code. And I'd like to send buyout layout of letters, to look beautiful.

Answer 1

You would need to create a plugin which overrides qa_send_email(...) and sets $params['html']=true before calling the default function. Your overriding function should be careful to only make this change if it's certain the message is part of a mass mailing. See qa_mailing_send_one(...) for how it's called.