Spam-Check-API.

curl -X POST https://api.unspam.email/ext/v2/spam-check \
  -H "Authorization: Bearer $UNSPAM_TOKEN"

# response (201)
{
  "id": "2Bl8rzTFN6VV",
  "inbox_address": "test-xyz@check.unspam.email"
}

# now send your email to inbox_address
# from your sending platform.

curl https://api.unspam.email/ext/v2/spam-check/2Bl8rzTFN6VV \
  -H "Authorization: Bearer $UNSPAM_TOKEN"

# response (200)
{
  "id": "2Bl8rzTFN6VV",
  "status": "completed",
  "score": 85,
  "sender": "you@yourdomain.com",
  "sender_ip": "192.0.2.1",
  "results": [
    { "id": "spf_check", ... },
    { "id": "dkim_check", ... },
    { "id": "dmarc_check", ... }
  ],
  "report_url": "https://unspam.email/email-test/2Bl8rzTFN6VV"
}