Can't send Email: Error 500 or 403 when trying to use SP.Utilities.Utility.SendEmail

Question

Hi all,
I am getting a Internal Server 500 error when trying to send an email using the SP.Utilities.Utility.SendEmail in my SharePoint Online App. It is worth noting that I am working from a custom .aspx page that does not inherit from the Masterpage, and using
AngularJS (thus the $http).
If I change the urlTemplate to use the hostWeb instead of the AppWeb, I get a 403 forbidden. Is there a library I need to include since I am using a custom.aspx page instead of the default.aspx page that comes when creating an App?
Any clues?
 var appweburl = decodeURIComponent(getQueryStringParameter('SPAppWebUrl'));
 var urlTemplate = appweburl + "/_api/SP.Utilities.Utility.SendEmail"; $http({
contentType: 'application/json',
url: urlTemplate,
type: "POST",
data: JSON.stringify({
'properties': {
'__metadata': {
'type': 'SP.Utilities.EmailProperties'
'From': [email protected]',
'To': {
'results': ['[email protected]']
'Body': 'Hello',
'Subject': 'remember'
headers: {
"Accept": "application/json;odata=verbose",
"content-type": "application/json;odata=verbose",
"X-RequestDigest": $("#__REQUESTDIGEST").val()
}).success(function(data, status, headers, config) {
$scope.data = data;
alert("Email Sent!");
}).error(function(data, status, headers, config) {
$scope.status = status;
alert("Email FAil!");
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Answer 1

I've got it working in SharePoint Online/SharePoint App using the following. Note that I am using AngularJS:
function sendEmail() {
var appweburl = decodeURIComponent(getQueryStringParameter('SPAppWebUrl'));
var urlTemplate = appweburl + "/_api/SP.Utilities.Utility.SendEmail";
$http({
contentType: 'application/json',
url: urlTemplate,
method: "POST",
data: {
'properties': {
'__metadata': {
'type': 'SP.Utilities.EmailProperties'
'From': '[email protected]',
'To': {
'results': ['[email protected]']
'Body': 'Good Day from the App. Dont reply if this was received.',
'Subject': 'App says hello and is awaiting your review'
headers: {
"Accept": "application/json;odata=verbose",
"content-type": "application/json;odata=verbose",
"X-RequestDigest": $("#__REQUESTDIGEST").val()
}).success(function(data, status, headers, config) {
console.log("Sent!");
$location.path('/');
}).error(function(data, status, headers, config) {
console.log("fail");
function getQueryStringParameter(param) {
var params = document.URL.split("?")[1].split("&");
var strParams = "";
for (var i = 0; i < params.length; i = i + 1) {
var singleParam = params[i].split("=");
if (singleParam[0] == param) {
return singleParam[1];
Personal Blog: http://thebitsthatbyte.com