add multiple Email account issues

[ChicagoFlo]

I successfully added multiple e-mail accounts to my new Xperia XA phone, but I can see incoming e-mails from only one of the accounts. Is there a way to see all of them in one OutLook IN box?

[Uliwooly]

Which app are you using to add this multiple accounts? 

I don't know if you are aware BUT you can use non-Google accounts with the Gmail app.

[ChicagoFlo]

I'm not sure I'm using an "app." The function to add e-mail accounts came with the phone.

[Uliwooly]

Are you referring to Settings > Accounts & sync > which account are you adding?