Is this a bug in implementation or is by design Invalid character in mail.Subject throws an exception

Question

asked Jun 13, 2016 by nklemen (150 points)

        var mail = new Rebex.Mail.MailMessage();
        mail.Subject = "FirsName \n LastName";

1 Answer

answered Jun 13, 2016 by Lukas Matyska (75.8k points)
selected Jun 14, 2016 by nklemen

Best answer

mail.Headers.Add("Subject", "=?us-ascii?Q?FirstName =0A LastName?=");