So I have an iPhone, iPad, Macbook air and an iMac. How in the world do I get them all to place nice with Gmail? Sometimes I get e-mails on my Air...and sometimes not. Sometimes it copies whatever I have received and deleted (on my iPhone)....and sometimes not. What is the best way to set all of these up so when I delete from one device, it's gone on the next? And that if I get an e-mail, it won't randomly choose what device it goes to?