I am not very technical. I currently have a mailbox with Fasthosts, and access it mainly via webmail. I want to leave fasthosts as moving website to a new hosting provider. emails need to come to. I need to be able to backup my old emails in case I need them for my business. I do not have outlook. I have downloaded Thunderbird and setup the account so I can now access my emails via thunderbird. But my fasthosts email account is closing very soon, when it does will they disappear from Thunderbird? How can I save/backup/copy (not sure on correct terminology) so that I have access to historic emails? Any help is massively appreciated.