How to send a mail using Microsoft.Office.Interop.Outlook.MailItem by specifying the From Address

Question

I'm using Interop for sending e-mails via Outlook, but I am not able to specify the From e-mail address.

I want to send mails to multiple users originating from the same sender (from). I need to mention the from e-mail address. However I cannot find a property using Intellisense that allows me to specify it.

Please help.

Microsoft.Office.Interop.Outlook.Application olkApp1 = 
    new Microsoft.Office.Interop.Outlook.Application();
Microsoft.Office.Interop.Outlook.MailItem olkMail1 =
    (MailItem)olkApp1.CreateItem(OlItemType.olMailItem);
        olkMail1.To = txtpsnum.Text;
        olkMail1.CC = "";
        olkMail1.Subject = "Assignment note";
        olkMail1.Body = "Assignment note";
        olkMail1.Attachments.Add(AssignNoteFilePath, 
            Microsoft.Office.Interop.Outlook.OlAttachmentType.olByValue, 1, 
                "Assignment_note");
olkMail1.Save();
//olkMail.Send();

Solution 1

You are using outlook to send the mail. Since outlook must be configured to use the from address of your mail, you cannot provide the from address directly. However, you can select an account available on outlook. For example :

using Outlook = Microsoft.Office.Interop.Outlook;

Outlook.Accounts accounts = olkApp1.Session.Accounts;
foreach (Outlook.Account account in accounts)
{
    // When the e-mail address matches, send the mail.
    if (account.SmtpAddress == "[email protected]")
    {
            olkMail1.SendUsingAccount = account;
            ((Outlook._MailItem)olkMail1).Send();
            break;
    }
}

Solution 2

The Send method sends the mail using the default account. To specify a different account to send the mail, set the SendUsingAccount property to the desired Account prior to calling the Send method.

var application = new Application();
var mail = (_MailItem) application.CreateItem(OlItemType.olMailItem);
mail.To = "[email protected]";
....
Outlook.Account account = Application.Session.Accounts["MyOtherAccount"];
mailItem.SendUsingAccount = account;
mail.Send();

More information can be found here:

http://msdn.microsoft.com/en-us/library/ff184652.aspx

Comments

[provençal le breton]

How can I create my mail, and open it? (like a mailto?). Save put the mail in non send mail, but can we have a window with the new create mail?

[Roman Boiko]

@Zaphod: use mail.Display(false) to display email as a non-modal window.

[provençal le breton]

@RomanD.Boiko :thanks for your comment, that's what i was searching for.

[Eric]

Thank you for including the using portion of this. Took me forever to find that. I'm not sure how developers normally know what 'using' stuff they need to include?

[j2associates]

@Eric You can code the using {} block for any class that implements IDisposable. When the using block ends, the variable defined in it is automatically disposed.

[Brendan Cain]

@j2associates I think they meant the namespace/alias "using"