Just like Gmail!

Wow, Airmail is the only mobile client, other than Gmail itself, that will let you Star and then Archive a Gmail email from the Inbox without losing the star! I have done this forever with my browser Gmail as an easy way to use Starred items as a To Do list. For this behavior, all you have to do is turn the "Archive Starred" setting to OFF. Really, really great. In this way, Airmail acts exactly like Gmail clients! Thank you, Airmail.

f4jock about Airmail - Your Mail With You