Question

I have a working form which sends emails from the default logged in account. I am trying to add a feature where the user can select an email account from a drop down list and send the emails via an alt address, like [e-mail] or [e-mail]. I am trying to use the “SendUsingAccount” option but no luck. I have look online but mostly find examples using VB which im not familiar with. My code is as follows:

Microsoft.Office.Interop.Outlook.Application objOutlook = new Microsoft.Office.Interop.Outlook.Application();
var mic = (MailItem)(objOutlook.CreateItem(OlItemType.olMailItem));
Inspector oAddSig = null;

mic.sendusingaccount = ??????????????     //here is where i need the help
mic.Subject = "Announcing Participant Website Enhancements!";
mic.Importance = OlImportance.olImportanceHigh;
mic.BodyFormat = OlBodyFormat.olFormatHTML;
//mic.Attachments.Add(PDFAttachment + yearending.Text + ".pdf");
object emailBody = ToolBox.GetStringFromTextFile((string)EmailBody);
oAddSig = mic.GetInspector;
mic.HTMLBody = emailBody + mic.HTMLBody;
//mic.Display(true);
mic.Send();

Answer 1

Well I always use the SMTP client from the System.Net.Mail namespace. It has a method called ‘send’ that allows you to provide the address of whom the message is ‘from’

Check it out:
http://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient.aspx

As long as you know the address of your exchange server (which should be OK since you are trying to use outlook in your example) everything should be A-OK. Probably a bit easier than the approach above too.