As a developer sending (and testing) email functionality, it would be helpful to have an endpoint to retrieve all campaign tags, with the parent/child structure of SubTags. Since Campaigns only return the name of each tag as a string, there's no current way to know about a given tag's parent. For instance, we have a set of language tags, which are underneath a Language tag. It would be helpful to be able to retrieve the full list of tags, along with the hierarchy, to see that a given tag ("EN") is underneath the Languages tag.
Something like:
GET /account_id/campaigntags
Returns
[
{
"Name": "Languages",
"SubTags": [
{"Name": "EN", "SubTags": []}
...
]
}
]
