Just a heads-up that Cloudflare’s Email Routing Service merely forwards email addresses you create to your existing email account.
If you’re looking for a full email service for your business that gives you a mailbox account that can send and receive emails, Cloudflare does not not provide such a service – you’ll need to get that from elsewhere (from your website’s hosting provider, Google Workspace, Microsoft 365, ZohoMail, etc) and configure your domain’s DNS in Cloudflare to point to that service.