Priority Property

Gets or sets the priority of the e-mail message

[Visual Basic]
Public Property Priority As MailPriority

[C#]
public System.Web.Mail.MailPriority Priority {get; set;}

One of the MailPriority values.

Sets the priority of the e-mails generated by this appender. The default priority is Normal.

If you are using this appender to report errors then you may want to set the priority to High.

SmtpAppender.Priority Property