e-mail truncated on local client - content not on server


New Email
Downloaded a bunch of July e-mail from my Yahoo (AT&T) account to my local Thunderbird client. On Thunderbird inbox mail, a long e-mail displays only a few lines with a message box saying it is Truncated - press the link to download the rest. But nothing happens....It's also possible I might have erased them from the server after downloading. There's one e-mail I really need to have.

I want to recover this particular e-mail message from the server - is there any way to do it?