I am new to Thunderbird I have down loaded all my old emails from the server about 3000 but now need to add most of the senders to my address book. I have looked at the suggestions on the help site. one said that i can click the to or from header and select add sender to address book but when i do it simply puts the emails into the "from" organization. If I right click I get a drop down box with many options but "add to address book" is not one of them. The other suggestion said how to type each individual person into the address book but this would be subject to many typing errors and mis sent emails