My gmail account works fine on my nexus 10 but having set up my Virgin email account I find that emails just disappear from my inbox, either immediately or after opening.
Also is there a way to add more folders? ie keep
Which app are you using to read your virgin email account? It sounds like there is some filter on the account to show unread messages only? Else there maybe some settings regarding synchronisation. With a POP3 email account you’ll want to set it to download emails from the server only.
In gmail, folders are managed through “labels”. You should prob set it up using a browser rather than the app as you have lots of controls over how emails can be automatically labelled etc.
You can find out more here: https://support.google.com/mail/answer/118708?hl=en