Try Edit|Preferences

http://kb.mozillazine.org/Menu_differences_in_Windows,_Linux,_and_Mac

I know that on windows the i must select Tools → Options... and on Linux Edit → Preferences... but on Windows i can find the Display and Advanced tab to set Open messages in: "A new message window" on Linux the DIsplay tab don't contains the advanced tab so i can't set it

re :on Linux the DIsplay tab don't contains the advanced tab so i can't set it

What version of Thunderbird have you installed on Linux ?

Old versions of Thunderbird used to have it in this location: Edit > Preferences > Advanced > 'Reading & Display' tab

See image below:

Ciao, the image that you have attached is related to Thunderbird installed on Windows, on top-left corner ther is options not preferences :) I use Thunderbird 60.2.1, last release available on Linux Ubuntu repository, I attached the General, Display and Andavced tab printscreen.

"Formatting", "Tags", "Advanced" are tabs. Click them. You'll find the option you seek in the Advanced tab.

This "hidden tabs" issue is a common gotcha in Ubuntu.

You might try setting this preference (IIRC):

mail.preferences.inContent

(in the config editor) to true. It places the Options/Preferences dialogue into a tab, rather than a separate window, which isn't in itself particularly useful, but the accompanying reformatting of the options may help with the hidden tabs.

https://support.mozilla.org/en-US/questions/1241793

Thanks Zenos,

setting true on mail.preferences.inContent I can see the Advanced tab on Dispaly and set to open the new message on a new window.

Ciao