I have used TB for a long time now and never had this problem. If I configure it on a new PC (Win 10 Pro) to get mail from a zoho hosted account, hitting mail download generates a bit of activity at the bottom of the window but no emails downloaded (I have checked there is one there) and no errors. I've disabled AV and no change. I'd like to see the POP3 traffic to try and diagnose the problem. How do I do that please? There seem to have been various generations of how this was done and the help is confusing - I've tried what I think are latest instructions but don't see an error console. Is there simply a way of getting the traffic spat into a text file please?