The following guide illustrates how to properly configure Outlook 2019 in Windows 10.
Note: If there is no account configured in Outlook 2019, the first step should be 3.
1. Open the File (Ficheiro) menu on the top left corner
2. In Info (Informações), choose Add Account (Adicionar Conta)
3. In the newly opened window, fill the blank with the IST mail address: firstname.lastname@example.org (example: email@example.com – not to be confused with IST-ID)
4. Fill the password blank with the respective institution services password (Fenix)
Outlook 2019 for Windows 10 configuration with IST email account is thus concluded.