curl --request POST \
  --url https://api-v2.missioninbox.com/mailbox/ \
  --header 'Content-Type: application/json' \
  --data '{
  "email": "<string>",
  "domain": 123,
  "relay_server": 123,
  "password": "<string>",
  "project": 123,
  "reply_to": "jsmith@example.com"
}'

{
  "id": 123,
  "email": "<string>",
  "password": "<string>",
  "first_name": "<string>",
  "last_name": "<string>",
  "sent_this_cycle": -1,
  "open_rate": "<string>",
  "reply_rate": "<string>",
  "bounce_rate": "<string>",
  "spam_complaints": "<string>",
  "health": "<string>",
  "domain_name": "<string>",
  "reply_to": "jsmith@example.com",
  "glock_test_reports": "<string>",
  "email_server": "<string>",
  "warmup_active": "<string>"
}