Having trouble generating an email with an attachment using Javascript

When I call the code below to create an email and add an attachment, everything works fine the first time. However, when I try to do it again, I encounter a RangeError.

I'm looking to enable the user to input the recipient's information and customize the message content before sending it out.

Can anyone shed light on why the error occurs on the second run of the method?

function NewMailItem(p_recipient, p_subject, p_body, p_file, p_attachmentname)
{
   try 
   {
     var objO = new ActiveXObject('Outlook.Application');
     var objNS = objO.GetNameSpace('MAPI');
     var mItm = objO.CreateItem(0);
     mItm.Display();
     if (p_recipient.length > 0) 
     {
       mItm.To = p_recipient;
     }
     mItm.Subject = p_subject;
     if (p_file.length > 0) 
     {
      var mAts = mItm.Attachments;
      mAts.add(p_file, 1, p_body.length + 1, p_attachmentname);
     }
     mItm.Body = p_body;
     mItm.GetInspector.WindowState = 2;
   } catch(e) 
   { 
     alert('unable to create new mail item'); 
   } 
}

The issue seems to be happening at the `mAts.add` line where it attempts to attach the document.

Additionally, note that the file name (`p_file`) is a direct URL to an image file.

Answer №1

This method is only compatible with Internet Explorer and requires the user to have Outlook installed on their device with an active account set up. Are you certain about sending emails using this approach?

Answer №2

I have found success using this concise code snippet:

var objO = new ActiveXObject('Outlook.Application');
var mItm = objO.CreateItem(0);

var mAts   = mItm.Attachments;
var p_file = [
  "http://stackoverflow.com/content/img/vote-arrow-up.png",
  "http://stackoverflow.com/content/img/vote-arrow-down.png"
];
for (var i = 0; i < p_file.length; i++) {
  mAts.add(p_file[i]);
}

It is important to note that I opted not to include any optional arguments in the Attachments.Add() method, as it defaults to adding attachments at the end by default.

If you are encountering issues, I recommend testing this standalone snippet first. If it works correctly for you, consider gradually reducing your existing code down to this essential minimum to identify the source of the problem.

Answer №3

To begin, execute the mItm.display() function. Next, set the mItm.GetInspector.WindowState property to 2. This method should successfully accomplish the desired outcome.

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