Add more configuration examples

[noctera]

1. Check if existing configuration examples are still up to date and add new necessary options

2. Add more configuration examples. Like setups with the mailer, etc.

[Sukriti-m]

Hi @noctera
I'd like to work on this issue.
Please assign this issue to me and add the 'hacktoberfest' label to it.

[Sukriti-m]

Hey @noctera
I apologize that I won't be able to work on this issue. You can go ahead and assign it to somebody else.

[trite8q1]

Hi @noctera,
you can assign this problem to me.