Can I use Shopify Email and Klaviyo simultaneously?

I have a few questions regarding Shopify Email.

1. If I install Shopify Email, will the content of the emails be reflected in the Orders section of the admin page?

2. Am I correct in assuming that Shopify Email is the same as traditional Email Hosting?

3. Can I use Shopify Email and Klaviyo together?

Please advice.
Thanks!

@kyles11 Thank you for your reply.

What I want to know is if Shopify Email is the same as traditional Email Hosting.