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Continue to ChatQuery : Different email providers for different subdomains? Setting up an email provider - Google Mail/Apps, Outlook, etc - seems straightforward for a single domain. In the case of multiple subdomains, https://vmapp.org/query/108117/Different-Email-Providers-For-Different-Subdomains-Setting-Up-An-Email-Provider-Google-Mail-Apps-Outlook-Etc-Seems-Straightforward-For-A-Single-Domain-In-The-Case-Of-Multiple-Subdomains/