Sandboxing email for a local WP site using just three lines of code!

In a local-staging-live workflow, often we have some restrictions on both local and staging / development environments. A common restriction is to disallow indexing of the development site that may introduce duplicate content in the search result, if indexing is allowed (that is not uncommon when we set up the live site and then copy it to develop further :-) ). There are lot more restrictions and workarounds in order to setup a perfect development or local environment. Here, let me share a particular solution regarding emails. Let me start with some of the use cases.

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