How to add a image in email body using MFMailComposeViewController How to add a image in email body using MFMailComposeViewController ios ios

How to add a image in email body using MFMailComposeViewController

Set email format as HTML. This code is woking fine in my app.

MFMailComposeViewController *emailDialog = [[MFMailComposeViewController alloc] init];NSString *htmlMsg = @"<html><body><p>This is your message</p></body></html>";NSData *jpegData = UIImageJPEGRepresentation(emailImage, 1.0);NSString *fileName = @"test";fileName = [fileName stringByAppendingPathExtension:@"jpeg"];[emailDialog addAttachmentData:jpegData mimeType:@"image/jpeg" fileName:fileName];emailDialog setSubject:@"email subject"];[emailDialog setMessageBody:htmlMsg isHTML:YES];[self presentModalViewController:emailDialog animated:YES];[emailDialog release];

Swift 5

import MessageUI    func composeMail() {        let mailComposeVC = MFMailComposeViewController()        mailComposeVC.addAttachmentData(UIImage(named: "emailImage")!.jpegData(compressionQuality: CGFloat(1.0))!, mimeType: "image/jpeg", fileName:  "test.jpeg")        mailComposeVC.setSubject("Email Subject")        mailComposeVC.setMessageBody("<html><body><p>This is your message</p></body></html>", isHTML: true)        self.present(mailComposeVC, animated: true, completion: nil)    }

I just went through this recently for Swift.

Function to add photo to email in Swift:

func postEmail() {    var mail:MFMailComposeViewController = MFMailComposeViewController()    mail.mailComposeDelegate = self    mail.setSubject("your subject here")    var image = // your image here    var imageString = returnEmailStringBase64EncodedImage(image)    var emailBody = "<img src='data:image/png;base64,\(imageString)' width='\(image.size.width)' height='\(image.size.height)'>"    mail.setMessageBody(emailBody, isHTML:true)    self.presentViewController(mail, animated: true, completion:nil)}

Function to return the formatted image:

func returnEmailStringBase64EncodedImage(image:UIImage) -> String {    let imgData:NSData = UIImagePNGRepresentation(image)!;    let dataString = imgData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))    return dataString}

I've found that (at least in my case) a PNG will work in the message composer but NOT when the message is opened / received by the user.

Composer Dandily showing logo PNG image!

Viewer Not so much logo images over here.

(Occasionally there will be a light blue outline where the image should be.)

Using the HTML body string below and the conversion below that seems to do the trick.

Message Body HTML String using JPEG

NSString *body = [NSString stringWithFormat:                  @"\                  <html>\                    <body>\                        Check out the App!\                        <br>\                        Isn't this a terriffic logo?!.\                        <br>\                        <img src = \"data:image/jpeg;base64,%@\" width = 100 height= 100>\                        <br>\                        <a href = \"%@\" > CLICK ITTTTTTT! </a>\                    </body>\                  </html>",                  imageString, @""];

Convert Image to string with JPEG Data

+ (NSString *)dataStringFromImage:(UIImage *)image{    NSData *imgData = UIImageJPEGRepresentation(image, 1);    return [imgData base64EncodedStringWithOptions:kNilOptions];}

Additional Info:

  • iOS Target = 8.0
  • iOS Device = 9.1
  • I am awful with HTML!

Thank you @Richard for the CORRECT answer to this question.