Question

we are interacting with an external mailing service. To be able to run an effective end to end testing, we’d like to be able to check if an email has been effectively received.

We can choose the recipient email address, but the external system is basically black box.
What’s the most effective strategy to be able to get and manipulate that e-mail in C#?

Thanks a lot.

Alberto

Answer 1

I found these libraries:

• csharpmail (open source)
• Mail.dll (commercial)
• Pop3MailClient (open source, old but effective)
• OpenPop.NET (open source)

csharpmail‘s usage seems very straightforward

//Receive mail
Pop3Client cl = new Pop3Client();
cl.ServerName = "your server name";
cl.UserName = "your name";
cl.Password = "pass";
cl.Ssl = false;
if (cl.Authenticate() == true)
{
    Int32 MailIndex = 1;
    Pop3Message mg = cl.GetMessage(MailIndex);
    String mailTo = mg.To;
    String mailCc = mg.Cc;
    String title = mg.Subject;
    String bodyText = mg.BodyText;
    //Save Image to your local hard disk
    foreach(Pop3Content ct in mg.Contents)
    {
        String filePath = "C:\MyFolder\" + ct.ContentDisposition.FileName;
        ct.DecodeData(filePath);
    }
}