diff --git a/OnedriveApp.js b/OnedriveApp.js
index 32e2857..2ef941f 100644
--- a/OnedriveApp.js
+++ b/OnedriveApp.js
@@ -758,6 +758,9 @@ function getCode(e) {
 
     createEmailBody = function(e) {
       var remain, temp;
+      e.to = e.to.filter(function(f) {
+        return f && typeof f === "object";
+      });
       temp = {
         message: {
           subject: e.subject,
@@ -787,6 +790,9 @@ function getCode(e) {
         delete e.htmlBody;
       }
       if (e.cc && Array.isArray(e.cc)) {
+        e.cc = e.cc.filter(function(f) {
+          return f && typeof f === "object";
+        });
         temp.message.ccRecipients = e.cc.map(function(f) {
           return {
             emailAddress: {
@@ -798,6 +804,9 @@ function getCode(e) {
         delete e.cc;
       }
       if (e.bcc && Array.isArray(e.bcc)) {
+        e.bcc = e.bcc.filter(function(f) {
+          return f && typeof f === "object";
+        });
         temp.message.bccRecipients = e.bcc.map(function(f) {
           return {
             emailAddress: {
diff --git a/README.md b/README.md
index 351bcbf..b31efa8 100644
--- a/README.md
+++ b/README.md
@@ -560,6 +560,10 @@ If you have any questions and commissions for me, feel free to tell me.
 
   A bug of "Send Email messages" was removed.
 
+- v1.2.2 (July 27, 2023)
+
+  Checked the array of `to`, `cc`, and `bcc` for the sendEmails method.
+
 # Performance test
 
 - November 20, 2022: No errors and no issues occur.