{
"name": "rfc8058-post-without-https-falls-back",
"description": "Post header requests one-click but the main header only offers mailto. Falls back to Mailto.",
"spec": {
"source": "RFC 8058",
"url": "https://www.rfc-editor.org/rfc/rfc8058#section-3.2",
"behavior": "RFC 8058 one-click requires a https URL; without one the Post header is ignored and standard RFC 2369 preference applies."
},
"input": {
"list_unsubscribe": "<mailto:u@example.com>",
"list_unsubscribe_post": "List-Unsubscribe=One-Click"
},
"expected": {
"kind": "Mailto",
"address": "u@example.com",
"subject": null
}
}