Added CID support

Author: elbuo8

sendgrid/message.py

@@ -47,6 +47,7 @@ def __init__(self, **opts):
         self.files = opts.get('files', {})
         self.headers = opts.get('headers', '')
         self.date = opts.get('date', rfc822.formatdate())
+        self.content = opts.get('content', {})
 
     def parse_and_add(self, to):
         super(Mail, self).add_to(to)
@@ -132,6 +133,9 @@ def add_attachment_stream(self, name, string):
         elif sys.version_info < (3, 0) and isinstance(string, unicode):
             self.files[name] = string
 
+    def add_content_id(self, cid, value):
+        self.content[cid] = value
+
     def set_headers(self, headers):
         self.headers = headers
 

sendgrid/sendgrid.py

@@ -74,6 +74,9 @@ def _build_body(self, message):
         for filename in message.files:
             if message.files[filename]:
                 values['files[' + filename + ']'] = message.files[filename]
+        for content in message.content:
+            if message.content[content]:
+                values['content[' + content + ']'] = message.content[content]
         return values
 
     def _make_request(self, message):