Order Notifications to Gmail - Primary / Social / Promotions

I have a few questions regarding email notifications to customers.

  1. At the moment, our customers using gmail are receiving their order notifications/updates through the promotions tab. Is there a way to redirect these to the primary email tab instead?

  2. How do I remove the via shopifyemail.com in the sender’s address? I purchased a domain through Shopify but I don’t know how to authenticate it.

via shopify.png

Thanks.

Thanks