Doku: https://wiki.mozilla.org/MailNews:Logging

Module:

• imap
• ImapAutoSync
• ldap
• mime
• msgdb (level 1=opens/closes, level 5 lists open db's on close, number of msg hdrs in use)
• nntp
• pop3
• smtp

Loglevel

• PRLOGNONE = 0, /* nothing / * PRLOGALWAYS = 1, / always printed / * PRLOGERROR = 2, / error messages / * PRLOGWARNING = 3, / warning messages / * PRLOGDEBUG = 4, / debug messages */
• 5 (recommended)

z. B. für imap und smtp: Umgebungsvariable für beide Module

export NSPR_LOG_MODULES=imap:5,smtp:5,timestamp

Dann Umgebungsvariable für Logfile

export NSPR_LOG_FILE=/tmp/tbmail.log

Doku siehe http://kb.mozillazine.org/Category:Visual_customizations_%28Thunderbird%29 und https://www.eriwen.com/css/tweaking-thunderbirds-chrome/

• Verzeichnis Chrome erstellen
• darin userChrome.css erstellen. Formatierungsbeispiele:

/* Global UI font */
* { font-size: 11pt !important;
  font-family: Verdana !important;
}

#folderTree> treechildren {font-size: 12px; font-family: Arial;}
#threadTree> treechildren {font-size: 12px; font-family: Arial;}
#dirTree> treechildren {font-size: 12px; font-family: Arial;}
#abResultsTree> treechildren {font-size: 12px; font-family: Arial

/* Menu font */
menu, menulist, menuitem {
  font-family: Times New Roman !important;
  font-size: 12pt !important;
}

http://kb.mozillazine.org/About:config_entries