Dan, be sure to send them this email in Portuguese, because they may not know English. You can do this by opening up Google Translate, and having the left side on English, and the right side on Portuguese. Once you have composed it, click on the Copy,? button, which is the first symbol on the bottom right of the "Translate To" field. Then, go to your email that you are composing to them, and right-click on it, and then click Paste, and then just send it. That's what I've been thinking about doing myself regarding these two. I just haven't gotten around to it. I hope this helps.
KC9SIO