Use BODY.PEEK instead of BODY in Imap object's GetMessage, GetsMessageInfo, GetMailMessage, GetMimeMessage, GetMessageList and Search methods.
            Unlike BODY, BODY.PEEK doesn't set the message's Seen flag.
            
    Namespace: 
   Rebex.Net
    Assembly:
   Rebex.Imap (in Rebex.Imap.dll)
Syntax
| Visual Basic | 
|---|
Public Property UsePeekForGetMessage As Boolean Get Set  | 
| C# | 
|---|
public bool UsePeekForGetMessage { get; set; }  |