This seems like a great tool I have been waiting for a while. As I understand, it is rather an IMAP client, but will you store my emails on your servers as well? Or do you only connect to the GMail email storage?

Also, do you keep GMail's messages intact? Or are you authorized to update filters, apply labels and make a mess of my greatly organized emails?

Another question comes to mind: how about mobile? I read more than half of my emails on my phone or tablet. Is lightermail able to handle this as well? I haven't seen an app in the Google Playstore and there is no mention on your site. How do you think you will handle mobile access? (I see the sms text on a phone with a link to a lighermail.com page)