Added reply_to functionality

Author: bhavberi

office365/directory/users/user.py

@@ -272,6 +272,7 @@ def send_mail(
         to_recipients,
         cc_recipients=None,
         bcc_recipients=None,
+        reply_to = None,
         save_to_sent_items=False,
     ):
         # type: (str, str|ItemBody, List[str], List[str], List[str], bool) -> Message
@@ -282,6 +283,7 @@ def send_mail(
         :param list[str] to_recipients: The To: recipients for the message.
         :param list[str] cc_recipients: The CC: recipients for the message.
         :param list[str] bcc_recipients: The BCC: recipients for the message.
+        :param list[str] reply_to: The Reply-To: : recipients for the reply to the message.
         :param bool save_to_sent_items: Indicates whether to save the message in Sent Items. Specify it only if
             the parameter is false; default is true
         """
@@ -302,6 +304,11 @@ def send_mail(
                 return_type.cc_recipients.add(Recipient.from_email(email))
                 for email in cc_recipients
             ]
+        if reply_to is not None:
+            [
+                return_type.reply_to.add(Recipient.from_email(email))
+                for email in reply_to
+            ]
 
         payload = {"message": return_type, "saveToSentItems": save_to_sent_items}
         qry = ServiceOperationQuery(self, "sendmail", None, payload)

office365/outlook/mail/messages/message.py

@@ -407,6 +407,14 @@ def cc_recipients(self):
             "ccRecipients", ClientValueCollection(Recipient)
         )
 
+    @property
+    def reply_to(self):
+        """The replyTo: recipients for the reply to the message."""
+        self._persist_changes("replyTo")
+        return self.properties.setdefault(
+            "replyTo", ClientValueCollection(Recipient)
+        )
+
     @property
     def sender(self):
         """The account that is actually used to generate the message. In most cases, this value is the same as the