text: import sendgrid
  import os
  
  
  sg = sendgrid.SendGridAPIClient(os.environ.get('SENDGRID_API_KEY'))
  
  ##################################################
  # Create a batch ID #
  # POST /mail/batch #
  
  response = sg.client.mail.batch.post()
  print(response.status_code)
  print(response.body)
  print(response.headers)
  
  ##################################################
  # Validate batch ID #
  # GET /mail/batch/{batch_id} #
  
  batch_id = "test_url_param"
  response = sg.client.mail.batch._(batch_id).get()
  print(response.status_code)
  print(response.body)
  print(response.headers)
  
  ##################################################
  # v3 Mail Send #
  # POST /mail/send #
  # This endpoint has a helper, check it out
  # [here](https://github.com/sendgrid/sendgrid-python/blob/HEAD/use_cases/README.md).
  
  data = {
      "asm": {
          "group_id": 1,
          "groups_to_display": [
              1,
              2,
              3
          ]
      },
      "attachments": [
          {
              "content": "[BASE64 encoded content block here]",
              "content_id": "ii_139db99fdb5c3704",
              "disposition": "inline",
              "filename": "file1.jpg",
              "name": "file1",
              "type": "jpg"
          }
      ],
      "batch_id": "[YOUR BATCH ID GOES HERE]",
      "categories": [
          "category1",
          "category2"
      ],
      "content": [
          {
              "type": "text/html",
              "value": "<html><p>Hello, world!</p><img src=[CID GOES HERE]></img></html>"
          }
      ],
      "custom_args": {
          "New Argument 1": "New Value 1",
          "activationAttempt": "1",
          "customerAccountNumber": "[CUSTOMER ACCOUNT NUMBER GOES HERE]"
      },
      "from": {
          "email": "sam.smith@example.com",
          "name": "Sam Smith"
      },
      "headers": {},
      "ip_pool_name": "[YOUR POOL NAME GOES HERE]",
      "mail_settings": {
          "bcc": {
              "email": "ben.doe@example.com",
              "enable": True
          },
          "bypass_list_management": {
              "enable": True
          },
          "footer": {
              "enable": True,
              "html": "<p>Thanks</br>The SendGrid Team</p>",
              "text": "Thanks,/n The SendGrid Team"
          },
          "sandbox_mode": {
              "enable": False
          },
          "spam_check": {
              "enable": True,
              "post_to_url": "http://example.com/compliance",
              "threshold": 3
          }
      },
      "personalizations": [
          {
              "bcc": [
                  {
                      "email": "sam.doe@example.com",
                      "name": "Sam Doe"
                  }
              ],
              "cc": [
                  {
                      "email": "jane.doe@example.com",
                      "name": "Jane Doe"
                  }
              ],
              "custom_args": {
                  "New Argument 1": "New Value 1",
                  "activationAttempt": "1",
                  "customerAccountNumber": "[CUSTOMER ACCOUNT NUMBER GOES HERE]"
              },
              "headers": {
                  "X-Accept-Language": "en",
                  "X-Mailer": "MyApp"
              },
              "send_at": 1409348513,
              "subject": "Hello, World!",
              "substitutions": {
                  "id": "substitutions",
                  "type": "object"
              },
              "to": [
                  {
                      "email": "john.doe@example.com",
                      "name": "John Doe"
                  }
              ]
          }
      ],
      "reply_to": {
          "email": "sam.smith@example.com",
          "name": "Sam Smith"
      },
      "sections": {
          "section": {
              ":sectionName1": "section 1 text",
              ":sectionName2": "section 2 text"
          }
      },
      "send_at": 1409348513,
      "subject": "Hello, World!",
      "template_id": "[YOUR TEMPLATE ID GOES HERE]",
      "tracking_settings": {
          "click_tracking": {
              "enable": True,
              "enable_text": True
          },
          "ganalytics": {
              "enable": True,
              "utm_campaign": "[NAME OF YOUR REFERRER SOURCE]",
              "utm_content": "[USE THIS SPACE TO DIFFERENTIATE YOUR EMAIL FROM ADS]",
              "utm_medium": "[NAME OF YOUR MARKETING MEDIUM e.g. email]",
              "utm_name": "[NAME OF YOUR CAMPAIGN]",
              "utm_term": "[IDENTIFY PAID KEYWORDS HERE]"
          },
          "open_tracking": {
              "enable": True,
              "substitution_tag": "%opentrack"
          },
          "subscription_tracking": {
              "enable": True,
              "html": "If you would like to unsubscribe and stop receiving these emails <% clickhere %>.",
              "substitution_tag": "<%click here%>",
              "text": "If you would like to unsubscribe and stop receiving these emails <% click here %>."
          }
      }
  }
  response = sg.client.mail.send.post(request_body=data)
  print(response.status_code)
  print(response.body)
  print(response.headers)
  