It depends on the underlying email server. But strictly speaking, the "+" is a valid identifier, and "[email protected]" is a completely different address than "[email protected]".
It just so happens that email servers tend to recognize the usage of "+" as a "tag" and route incoming mail using the tag to the root email that precedes the plus and tag.
But, as the sender, you cannot assume that this is always the behavior. You must assume that those are two different emails.
It just so happens that email servers tend to recognize the usage of "+" as a "tag" and route incoming mail using the tag to the root email that precedes the plus and tag.
But, as the sender, you cannot assume that this is always the behavior. You must assume that those are two different emails.