If you have T'bird set up as a POP3 account it will have downloaded all your emails onto your computer so they will be stored on your computer and you will not lose them.
If you have set T'bird up as an IMAP account, the emails and folders are not stored on your computer unless you have specifically set T'bird to store them there. They are stored on the BT servers which means you will lose them.
If you are using Thunderbird, then I suggest you archive all of your mail folders, you can then inport them to another account if you want to.
If you do not do that, when your account is deleted, and Thunderbird tries to sync to it, you may lose the messages if its an IMAP account.
The easiest option is to setup a free Gmail account, then simply copy the folders over from your BT email account.
Thanks gg30340 & Keith
Thank you for those replys, I'm not certain I'm leaving yet it will depend on the deal I get, I am just trying to cover all the pit falls but now you have given me some options. Thunderbird is setup as IMAP but I also have a Gmail account I just don't find Gmail nice to use.
@Keith_Beddoewrote: The easiest option is to setup a free Gmail account, then simply copy the folders over from your BT email account.
Any chance you can explain further how to copy the folders across into gmail?
Ive got several hundred, but probably thousands of mails I need to copy across from my BTinternet inbox and sent box.However I only need to access them for reference for the next year or so then they can be deleted.
I've had it with BT and am jumping ship. Every time I change the password on my various BT email accounts I get frozen out of my mail and only the BT techies can reset the system.
Many thanks in advance