Hi James,
1) When I reply to an email sent to the alias, by default it doesn't reply from the alias, instead reply from my account name address. Any thoughts on how I might correct this without manually selecting the "From" field each time?
The only way I know (only for Outlook for Windows): SmartReply 365 add-in.
2) I'm not being able to set the alias as the default "From" email for Outlook online--is this possible, and if so how? (As a note--I don't see the "Addresses to send from" section in the Compose and Reply panel of the settings.)
Your IT staff can set your alias as a default address easily.
3) When I send email with Outlook online, the display name doesn't show up correctly when I receive it in my gmail -- instead, only the email itself shows up.
Just a bug.
Regards,
Victor