Thanks for the tip GBM. I checked and it was set to 'Archive', and there were the missing emails!


MILLWALL: I forgot to say, double check your port settings...

Retrieval needs to be 995 (you might need to scroll down slightly to see the field)
Outgoing needs to be 465

Also, depending on when you opened your account, you might to put 'pop.googlemail.com' not pop.gmail.com

As GBM mentioned, go to your Gmail account settings online (not in the tablet email client) and there is help on configuring email clients.