Hi MisterEd,
Please check your Gmail's account settings :
http://www.aqua-mail.com/forum/index.php?topic=3553.msg17560#msg17560You have to define an archive-folder for your Gmail account:
> go to the app's main window (account list view) > long press on Account name (your Gmail account) > Options and folders > folders > tap on folders name ("All mail") > choose "Sync as Archive" or "Archive, don't sync".
*** Note: "to sync or not to sync" does not affect the above -- it's only a question of whether you want Aqua to keep the "archive" (All Mail) folder up to date when it checks mail, or not. ***
+ Assign a swipe gesture for message lists, if wanted:
> app settings -> swiping -> scroll down to "message list"