curl --request POST \
  --url https://www.dench.com/api/v1/email/drafts/{draftId}/attachments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "string",
  "contentType": "string",
  "contentBase64": "string"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({name: 'string', contentType: 'string', contentBase64: 'string'})
};

fetch('https://www.dench.com/api/v1/email/drafts/{draftId}/attachments', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://www.dench.com/api/v1/email/drafts/{draftId}/attachments"

payload = {
    "name": "string",
    "contentType": "string",
    "contentBase64": "string"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "storageId": "<string>",
  "name": "<string>",
  "contentType": "<string>",
  "size": 123
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}