When wiffies sends out a message it goes as an attachment. She is running Windows 7 Pro 32-bit. ESET SS 5. We called Thunderbird who switched us to a Guru. In his search of her computer he said we had over 7000+ errors in the registry. I regularly use Ccleaner and ESET SS to take care of those types of problems. We did not let him continue. On my puter running Windows 7 Pro 64-bit I have to download the message and then it is garbage. So of the hundreds of settings for Thunderbird it is possible I have missed one or two. Thanks for any suggestions.