curl --request POST \
  --url https://api.lettermint.co/v1/suppressions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason": "spam_complaint",
  "scope": "team",
  "email": "jsmith@example.com",
  "route_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "project_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "emails": [
    "jsmith@example.com"
  ]
}
'

{
  "message": "<string>",
  "data": {
    "created": [
      "<string>"
    ],
    "skipped": [
      "<string>"
    ]
  }
}