Someone

jeanmi@pistou:~/.mozilla-thunderbird/g35ywlat.default$ grep -n hostname prefs.js
77:user_pref("mail.server.server1.hostname", "Local Folders");
91:user_pref("mail.server.server2.hostname", "pop.orange.fr");
103:user_pref("mail.server.server3.hostname", "pop.orange.fr");
109:user_pref("mail.smtpserver.smtp1.hostname", "smtp-msa.orange.fr");
jeanmi@pistou:~/.mozilla-thunderbird/g35ywlat.default$ grep -n useremail prefs.js
54:user_pref("mail.identity.id1.useremail", "jean-michel.mesmin@orange.fr");
64:user_pref("mail.identity.id2.useremail", "donq.29@orange.fr");
jeanmi@pistou:~/.mozilla-thunderbird/g35ywlat.default$