Using Outlook for Android in business environments for email and scheduling
For years I tried different apps with no success. Microsoft has made absolutely no developmental effort to make this happen.
Hoping to lay this to rest, I went with Nine for Android. Yes, I purchased it and now it is mine forever. Not only does it provide all the encryption and customizations, it also allows me to set exactly the font I want to use for new messages as well as replies. Another bonus, full HTML signatures. Do you have an email signature that has a company logo? Yes, you can use it!
I absolutely love Nine. You should give it a try.
Forget about the Outlook Mobile App.