new file mode 100644
--- /dev/null
+++ b/mail/branding/thunderbird/brand.dtd
@@ -0,0 +1,9 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<!ENTITY  brandShortName        "Thunderbird">
+<!ENTITY  brandShorterName      "Thunderbird">
+<!ENTITY  brandFullName         "Mozilla Thunderbird">
+<!ENTITY  vendorShortName       "Mozilla">
+<!ENTITY  trademarkInfo.part1   "Mozilla Thunderbird i Thunderbird znakovi
+                                 su zaštitni znakovi Mozilla Foundation.">

new file mode 100644
--- /dev/null
+++ b/mail/branding/thunderbird/brand.properties
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+brandShortName=Thunderbird
+brandShorterName=Thunderbird
+brandFullName=Mozilla Thunderbird
+vendorShortName=Mozilla

--- a/mail/chrome/messenger/preferences/preferences.properties
+++ b/mail/chrome/messenger/preferences/preferences.properties
@@ -107,16 +107,18 @@ defaultUserContextLabel=Niti jedan
 #   %1$S = size
 #   %2$S = unit (MB, KB, etc.)
 actualDiskCacheSize=Vaša priručna memorija trenutno zauzima %1$S %2$S diskovnog prostora
 actualDiskCacheSizeCalculated=Računanje veličine priručne memorije…
 
 # LOCALIZATION NOTE (labelDefaultFont): %S = font name
 labelDefaultFont=Zadani (%S)
 
+labelDefaultFontUnnamed=Zadano
+
 # LOCALIZATION NOTE (appLocaleString): %S = Name of the application locale,
 # e.g. English (United States)
 appLocale.label=Jezik aplikacije: %S
 appLocale.accesskey=p
 # LOCALIZATION NOTE (rsLocaleString): %S = Name of the locale chosen in regional settings,
 # e.g. German (Germany)
 rsLocale.label=Regionalne postavke jezika: %S
 rsLocale.accesskey=g