I currently use the GMAIL app on my Android. I downloaded the new EM mobile client. The app did download all my local folders, however the emails only go back about 12 months. I have emails that go back much further than one year. Is there a way I can have the app pull all the emails in my gmail account? The GMAIL mobile app works that way and pulls in all the emails that I have stored in my local folders.
Local Folders are not synced. They are on your device only.
You can sync IMAP folders though, so those you see in webmail.
Go to settings and tap on your account. Tap on the IMAP option, and then on Message sync time period. Change that from Last Year to All Time.