Add some notes on the ability to set production mail config.
Add some notes on the ability to set production mail config.

nzherald/alaveteli,petterreinholdtsen/alaveteli,petterreinholdtsen/alaveteli,Br3nda/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,nzherald/alaveteli,petterreinholdtsen/alaveteli,Br3nda/alaveteli,4bic/alaveteli,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli,4bic/alaveteli,4bic/alaveteli,4bic/alaveteli,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli_old,petterreinholdtsen/alaveteli,andreicristianpetcu/alaveteli_old,petterreinholdtsen/alaveteli,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli_old,nzherald/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli,4bic/alaveteli