Hi, my folders have disappeared, apart from my inbox - including sent, junk, deleted. How do I recover them please? I've tried the suggestions from Google, but nothing works.

Also, as a separate issue, I can't now send or receive emails from my iPhone, but can from my Mac? On my phone, I get a message saying that the server is not responding. I have tried entering my server details but it doesn't work. The message says 'bad certificate format - 9,808'. This happened overnight and I hadn't changed anything. How do I fix this please, in order to send and receive messages on my phone.