I want to implement the gmail for sending mails to the client. Now, gmail contains many tabs like "Primary", "Promotions","Social", etc., By default, the mail will be sent to the "Primary" tab. But, now I want to send to the promotions tab. How we can do it? Kindly help me.. I need thorugh "C#.NET" coding. I know how to send the email using C#, but I need mail to hit other tabs rather than "Primary" tab in gmail.