Issue mailapp windows phone 10

[Windows Central Question]

When you add an new account (ex Gmail) there is an option you can uncheck "use same user and password for sending email"

I tried to use this option so I can send my mails true an alias but the field "password" isn't available.

How can I fix this? The password field is important for this option.

 

[kyokukou]

When I tried to use the option whitout the field for the password I received next error code

We're having a problem connecting to the server. Make sure your sign in info is correct and try again. Error code: 0x801901f5