I have been using Thunderbird for many years (a decade). Just recently, I have contacts that tell me that when I forward an email to them, they can see my reply, but they cannot see the previous quotes (previous exchanges) in the thread. I never had such problem in the past. Has something changed regarding the way Thunderbird encodes messages? If I remove completely the formatting of the email (only simple text remaining), then the problem dissapears. But this is not an adequate solution. Thanks