It is possible to send traffic to the offer directly without showing the lander and without redirect at the same time.
To do that follow the instructions.
- Create a new lander as usual Landers > Landers List > New Lander and give it a meaningful name, something like "Direct"; 
- Copy and paste the following code to the Lander Editor; - <html> 
 <body style="margin: 0; ">
 <iframe src="https://{trackingdomain}/click/?origin={origin}" style="border: 0; width: 100%; height: 100%"></iframe>
 </body>
 </html>
- Choose that direct lander and the offer in your Path within Destination settings of the campaign. 
Zeustrack alert:
Keep in mind that some of the traffic sources and affiliate networks as well do not accept the iframe solutions, use it at your own risk.