In GData there was a method to retrieve all the aliases in a domain does Google API have an equivalent method or what would be best practice for an comparable solution?
Full path of old method - Google.GData.Apps.MultiDomainManagementService.RetrieveAllDomainUserAlias()
Check if this link helps -
https://developers.google.com/admin-sdk/directory/v1/reference/users/aliases
The list method returns all aliases.