When I initially signed up for a Microsoft account, I used a yahoo email address as the signin email and created a password as instructed. I recently set up an Outlook.com email address on our PC where we use Outlook as our email client. Everything works fine there. I downloaded the app to put it on my phone. Now on the phone I receive email at the outlook address but when I send mail, it shows my yahoo address as the sent from address since I had to submit that to open/access my Microsoft account. How can I change things on my phone so the sent from address shows outlook instead of yahoo? It's confusing to people who send an email to my outlook address and then it looks like I reply from yahoo. I am not a tech person so please reply with a step by step approach if possible. Thank you.
Original title: Outlook mobile app