You might be unaware but you just brought up two completely different issues.
Regarding the SSL Protocol error, it’s because there’s no SSL on your site, you cannot just type https:// and expect to work out of the blue.
See this to learn how to enable HTTPS (SSL) for your website:
Regarding your second issue, I found no MX records for your site. Similarily, you cannot just get a domain and send some random emails and expect it to work.
You have to setup a bussiness email from something like Zoho. You can also setup email forwarding but since you want to send emails, these won’t be an easy option for you.