Mastering TypeScript 3 - Third Edition

Configuration settings

When writing code that is sending emails, it makes sense to use different settings for your email services depending on the deployment environment. When developers are working with email code, they should be able to use a local SMTP server, so that they can quickly verify emails that are sent to and from different email accounts, without actually sending out emails. In a testing environment, testers should be able to specify which accounts they wish to use as the sending account, and what SMTP server to use. In a Factory Acceptance Testing (FAT) environment, these email settings may change once more, so that emails from any of the test environments don't affect the FAT environment. The final settings would, of course, ...