@jonsully Thanks for your suggestions and feedback. Again, as a newbie, is there anything special I’d need to do after registering the domains on NameCheap other than what is documented below on Netlify’s documentation site?
Also, are the domain aliases in your example the exact same as a 301 redirect? I don’t want any negative impacts on my SEO (search engine optimization).
Lastly, something I forgot to ask earlier: Can the MX record be modified easily to use the custom domain feature with my paid ProtonMail account?
I found this, and it partly answers my question:
https://answers.netlify.com/t/adding-mx-record-to-netlifys-dns/3020
And related to that, how do you set SPF, DKIM, and DMARC records? All I could find is this:
Again, thanks for the help!