Objective-C
Objective-C
Outlook Send HTML Email with Embedded Images and Attachments
See more Outlook Examples
This example sends an HTML email with both embedded images and attachments. Other examples exist for:- Sending plain-text email.
- Sending HTML email.
- Sending HTML email with embedded images.
- Sending plain-text email with attachments.
This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com
Chilkat Objective-C Downloads
#import <CkoHttp.h>
#import <CkoStringBuilder.h>
#import <CkoBinData.h>
#import <CkoJsonObject.h>
#import <CkoHttpResponse.h>
BOOL success = NO;
// Important: This example requires Chilkat v9.5.0.68 or greater.
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
CkoHttp *http = [[CkoHttp alloc] init];
// Use your previously obtained access token here:
// See the following examples for getting an access token:
// Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
// Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
// Refresh Access Token (Azure AD v2.0 Endpoint).
// Refresh Access Token (Azure AD Endpoint).
http.AuthToken = @"MICROSOFT_GRAPH_ACCESS_TOKEN";
// To send mail, we'll POST to the following endpoint:
//
// POST /users/{id | userPrincipalName}/sendMail
//
// (The special keyword "me" may be used in place of a principal name.)
//
// This example will send HTML email containing the following HTML body.
// After the
// <html>
// <head>
// <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
// <meta content="text/html; charset=utf-8">
// </head>
// <body bgcolor="#FFFFFF">
// <font face="Calibri">This is a test <b>HTML email with embedded images</b>.<br>
// <br>
// <img alt="" src="cid:starfish"><br>
// <img alt="" src="cid:hedgehogs"><br>
// </font>
// </body>
// </html>
// Build the HTML body...
BOOL bCrlf = YES;
CkoStringBuilder *sbHtmlBody = [[CkoStringBuilder alloc] init];
[sbHtmlBody AppendLine: @"<html>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<head>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<meta content=\"text/html; charset=utf-8\">" crlf: bCrlf];
[sbHtmlBody AppendLine: @"</head>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<body bgcolor=\"#FFFFFF\">" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<font face=\"Calibri\">This is a test <b>HTML email with embedded images</b>.<br>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<br>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<img alt=\"\" src=\"cid:starfish\"><br>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"<img alt=\"\" src=\"cid:hedgehogs\"><br>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"</font>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"</body>" crlf: bCrlf];
[sbHtmlBody AppendLine: @"</html>" crlf: bCrlf];
// Load the embedded image files.
CkoBinData *jpgStarfish = [[CkoBinData alloc] init];
[jpgStarfish LoadFile: @"qa_data/jpg/starfish.jpg"];
CkoBinData *jpgHedgeHogs = [[CkoBinData alloc] init];
[jpgHedgeHogs LoadFile: @"qa_data/jpg/hedgehogs.jpg"];
// Load files that are to be attached (not inline images)
CkoBinData *attach1 = [[CkoBinData alloc] init];
[attach1 LoadFile: @"qa_data/pdf/fishing.pdf"];
CkoBinData *attach2 = [[CkoBinData alloc] init];
[attach2 LoadFile: @"qa_data/msword/sample.docx"];
// The body of the POST request contains JSON that specifies the email subject, body,
// recipients, etc. This example will build the following JSON HTML email with
// two embedded images and two attachments.
//
// The only difference between an embedded inline image and an attachment is that the
// inline image must have a cid that corresponds to the "cid:" found in the "src" attribute
// of an IMG tag within the HTML body of the email. (The inline image is also marked as "isInline",
// whereas the attachments are not, but I don't know if this actually makes a difference..)
//
// {
// "message": {
// "subject": "Sample HTML Email with Embedded Images and Attachments",
// "body": {
// "contentType": "html",
// "content": "The HTML body goes here..."
// },
// "toRecipients": [
// {
// "emailAddress": {
// "name": "Chilkat Software",
// "address": "admin@chilkat.io"
// }
// },
// {
// "emailAddress": {
// "address": "chilkat.support@gmail.com"
// }
// }
// ],
// "ccRecipients": [
// {
// "emailAddress": {
// "name": "Chilkat Blog",
// "address": "admin@cknotes.com"
// }
// }
// ],
// "attachments": [
// {
// "@odata.type": "#microsoft.graph.fileAttachment",
// "name": "starfish.jpg",
// "contentType": "image/jpeg",
// "size": 6497,
// "isInline": true,
// "contentId": "starfish",
// "contentLocation": null,
// "contentBytes": "base64_data_here"
// },
// {
// "@odata.type": "#microsoft.graph.fileAttachment",
// "name": "hedgehogs.jpg",
// "contentType": "image/jpeg",
// "size": 48845,
// "isInline": true,
// "contentId": "hedgehogs",
// "contentLocation": null,
// "contentBytes": "base64_data_here"
// },
// {
// "@odata.type": "#microsoft.graph.fileAttachment",
// "name": "fishing.pdf",
// "contentType": "application/pdf",
// "size": <theActualSize>,
// "isInline": false,
// "contentBytes": "base64_data_here"
// },
// {
// "@odata.type": "#microsoft.graph.fileAttachment",
// "name": "sample.docx",
// "contentType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
// "size": <theActualSize>,
// "isInline": false,
// "contentBytes": "base64_data_here"
// }
// ]
// },
// "saveToSentItems": true
// }
//
// Build the above JSON.
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"message.subject" value: @"Sample HTML Email with Embedded Images and Attachments"];
[json UpdateString: @"message.body.contentType" value: @"html"];
[json UpdateString: @"message.body.content" value: [sbHtmlBody GetAsString]];
[json UpdateString: @"message.toRecipients[0].emailAddress.name" value: @"Chilkat Software"];
[json UpdateString: @"message.toRecipients[0].emailAddress.address" value: @"admin@chilkat.io"];
[json UpdateString: @"message.toRecipients[1].emailAddress.address" value: @"chilkat.support@gmail.com"];
[json UpdateString: @"message.ccRecipients[0].emailAddress.name" value: @"Chilkat Blog"];
[json UpdateString: @"message.ccRecipients[0].emailAddress.address" value: @"admin@cknotes.com"];
[json UpdateString: @"message.attachments[0].\"@odata.type\"" value: @"#microsoft.graph.fileAttachment"];
[json UpdateString: @"message.attachments[0].name" value: @"starfish.jpg"];
[json UpdateString: @"message.attachments[0].contentType" value: @"image/jpeg"];
[json UpdateInt: @"message.attachments[0].size" value: jpgStarfish.NumBytes];
[json UpdateBool: @"message.attachments[0].isInline" value: YES];
// This contentId must match the "cid:" in the HTML
[json UpdateString: @"message.attachments[0].contentId" value: @"starfish"];
[json UpdateNull: @"message.attachments[0].contentLocation"];
[json UpdateBd: @"message.attachments[0].contentBytes" encoding: @"base64" bd: jpgStarfish];
[json UpdateString: @"message.attachments[1].\"@odata.type\"" value: @"#microsoft.graph.fileAttachment"];
[json UpdateString: @"message.attachments[1].name" value: @"hedgehogs.jpg"];
[json UpdateString: @"message.attachments[1].contentType" value: @"image/jpeg"];
[json UpdateInt: @"message.attachments[1].size" value: jpgHedgeHogs.NumBytes];
[json UpdateBool: @"message.attachments[1].isInline" value: YES];
// This contentId must match the "cid:" in the HTML
[json UpdateString: @"message.attachments[1].contentId" value: @"hedgehogs"];
[json UpdateNull: @"message.attachments[1].contentLocation"];
[json UpdateBd: @"message.attachments[1].contentBytes" encoding: @"base64" bd: jpgHedgeHogs];
[json UpdateString: @"message.attachments[2].\"@odata.type\"" value: @"#microsoft.graph.fileAttachment"];
[json UpdateString: @"message.attachments[2].name" value: @"fishing.pdf"];
[json UpdateString: @"message.attachments[2].contentType" value: @"application/pdf"];
[json UpdateInt: @"message.attachments[2].size" value: attach1.NumBytes];
[json UpdateBool: @"message.attachments[2].isInline" value: NO];
[json UpdateBd: @"message.attachments[2].contentBytes" encoding: @"base64" bd: attach1];
[json UpdateString: @"message.attachments[3].\"@odata.type\"" value: @"#microsoft.graph.fileAttachment"];
[json UpdateString: @"message.attachments[3].name" value: @"sample.docx"];
[json UpdateString: @"message.attachments[3].contentType" value: @"application/vnd.openxmlformats-officedocument.wordprocessingml.document"];
[json UpdateInt: @"message.attachments[3].size" value: attach2.NumBytes];
[json UpdateBool: @"message.attachments[3].isInline" value: NO];
[json UpdateBd: @"message.attachments[3].contentBytes" encoding: @"base64" bd: attach2];
[json UpdateBool: @"saveToSentItems" value: YES];
// -------------------------------------------------------------
// Important: This example requires Chilkat v9.5.0.68 or greater.
// -------------------------------------------------------------
// Send the HTTP POST (i.e. send the HTML email)
CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpJson: @"POST" url: @"https://graph.microsoft.com/v1.0/me/sendMail" json: json contentType: @"application/json" response: resp];
if (success == NO) {
NSLog(@"%@",http.LastErrorText);
return;
}
// The send succeeded if the response status code = 202.
// In the success case, there is no response body. (We just get the response code to know that it succeeded.)
if ([resp.StatusCode intValue] != 202) {
[json Load: resp.BodyStr];
json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);
NSLog(@"%@%d",@"Failed, response status code = ",[resp.StatusCode intValue]);
}
else {
NSLog(@"%@",@"Outlook HTML Mail Sent.");
}