Question about the email configuration

[tmoko]

Hi!

@StephaneFe

Email address for admin account(s)? [me@example.com,you@example.com]:  

Can I specify here an email address not related to the domain I’ll use with discourse?
Eg can I specift my gmail personal email address if this is the address I use the most often?

Yep you can use your personal email address, this email address is for your admin account when your forum is set up

@StephaneFe

SMTP server address? [smtp.example.com]: 
SMTP port? [587]: 
SMTP user name? [user@example.com]: 
SMTP password? [pa$word]: 

Are these 4 fields related to the email provider recommended in this page ?

Yes they are, you will need email for your discourse forum to work (email notifications, account activation, etc).

The SMTP details will be with the email provider you’ve chosen, and also make sure to set up SPF and DKIM records as the install guide says. Your email provider will have instructions on SPF and DKIM (it involves going to the place where you bought your domain name, and creating some TXT records).

@StephaneFe

Let's Encrypt account email? (ENTER to skip) [me@example.com]: 

Could you please explain to me what is it for?

This is for setting up HTTPS, you can read more here:

Setting up HTTPS support with Let's Encrypt

This guide is only for existing installs where HTTPS is not enabled. Following the official setup guide automatically enables HTTPS by default. So you’d like to add https to your Discourse absolutely free, courtesy of our friends at Let’s Encrypt? Is everything else on your site ready for HTTPS? Before you start, please bear in mind that for HTTPS to work properly, every single resource on the page must be HTTPS compatible. Consider your CDN, your social logins, your…

I don’t know too much besides having followed the install guide myself and helping a friend, so others can correct me