curl --request POST \
  --url https://api.onetsolutions.net/v1/organizations/{organization_id}/projects/{project_id}/hosting/{id}/emails/create \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "jsmith@example.com",
  "password": "<string>",
  "quota_mb": 250
}
'

{
  "email": "jsmith@example.com",
  "user": "<string>",
  "domain": "<string>",
  "quota_mb": 123,
  "quota_used_mb": 123,
  "is_main": false
}