You can connect an email purchased outside of Wix to continue using a mailbox from your existing email provider. In most cases, your mailbox's MX (Mail Exchange) records are automatically added when you connect your domain in Wix. This allows your emails to continue working. However, you may need to edit the M

Connecting a subdomain to an external resource allows you to seamlessly integrate other platforms, like a blog, into your Wix website. Doing so expands your site's functionality and gives your visitors a more comprehensive online experience. 

For example,

It is not possible to connect email accounts from more than one email provider to the same domain. You can have numerous domain-based emails, but they must be purchased from the same email provider (e.g., only from Google Workspace, or only from GoDaddy).  

Mail Exchange (MX) records are a type of DNS record. They specify the mail server to which any of your mail should be directed. Your domain must have your email provider's MX records added to its DNS records for your email to work.