Third Party Email Hosting for Shopify Managed Domain

Store Design
1

Hi,

My shop domain is bought from and managed by Shopify. The business email service is from Namecheap.

I’ve set up the private email DNS records stated in this link

https://www.namecheap.com/support/knowledgebase/article.aspx/1340/2176/namecheap-private-email-records-for-domains-with-thirdparty-dns/)

How can the Incoming/Outgoing server settings be set up too? What other entries do I have to make on DNS settings under Shopify managed domains?

Thank you.