I am using gmail via the mail app on my Mac computers and iOS devices and cannot figure out how to set-up so that when I delete an email it is deleted from all devices and gmail server (trashed and not archived). I don't actually use the mail app on my computers but need to import my gmail account to set-up mail. I'll find that some email deleted from my iPad or iPhone will still be visible when I use gmail on my computers, and much of this mail is also under 'all mail' and archived rather than in my trash that auto deleted after 30 days. If I delete something I want it in the trash, not archived unless I specify that option, but have been unable to figure out how to change this? Hope someone knows the answer as I have tons of archived mail in my gmail account that I'd like to get rid of permanently since many are ads, etc.