Can you explain that in more detail? Typically there is a toolbar within a window. I don't understand what ' toolbar in collected addresses folder' means.

What are you looking for in the first place?

Also, there is no Thunderbird version 43.0.4. What version are you talking about?

I want to add more mailing lists in the 'collected addresses' folder of Thunderbird , but I can find no way to do so. There is no toolbar showing with this option. Where do I find this toolbar/facility Thanks

Open the address book press F10 to display the main menu at the top. Select view and then Toolbars. I would suggest you repeat to select the first three entries.