Make your website of record your website. Make social media platforms and others (e.g. Google) secondary to that. Don't let Google and Facebook control how you build your website. I am amazed at companies that take their websites and subjugate them to their Facebook page. You may gain social attention but you are handing over control. Never, ever, ever say to contact me go to facebook.com/xxxx or my email address is…
Others doesn't include whoever provides your MX records.