Direct Mail Campaign be able to choose from your design library like you do with other campaigns
When creating a design postcard, the sizing continues to be an issue. When you download the post card then attempt to import it there is always either file size, file type, or dimension size issues. So if you could create you postcard in designs then just select it from your design library when creating the direct mail campaign. Just like you can do when creating a paid ad campaign would solve a lot of headaches of trying to get the post card downloaded it the finite exact settings it has to be to be able to import it...

This has been released - hooray! Check out our answers.kw.com article on how to complete this process: https://answers.kw.com/hc/en-us/articles/360042134733-Create-and-Download-a-Postcard-Design-for-a-Direct-Mail-Campaign-in-Command