You need to explain this a bit more. '''Q:''' Is this a POP or IMAP mail account? '''Q:'''Is this a new mail account you have just created or is it one that has been used for some time? '''Q:'''Are emails being downloaded to folders in thunderbird? '''Q:'''Can you see the emails in the Inbox folder or Junk folder or any other folder? re :'' I want to unblock them'' '''Q:'''What do you mean - Thunderbird does not block anything? '''Q:'''Are the emails viewable in webmail? '''Q:'''does Thunderbird download them? '''Q:'''Do you mean you can read the email but it has a load of outlined boxes with no images?