Sending email with none service

Dear all,
I have the following doubt …
On the email settings if i am not using none of the services can i just type my company name and the smtp servers it uses and the emails will work (bcs i have done and did not receive) ?

The other is i have created a quote and the Title when emailed came like this Cotação: QTN-00003
What to do to have this solved?

@Helio_Jesus, yes you can configure your own Email services instead of standard services, but ensure that you have the right credentials.

@Helio_Jesus ERPNext have some issues with UTF-8 in some places, you need report that as issue!

@max_morais_dmm Obrigado.