diff --git a/UI/MailerUI/English.lproj/Localizable.strings b/UI/MailerUI/English.lproj/Localizable.strings
index cf14bf58d..2574e4877 100644
--- a/UI/MailerUI/English.lproj/Localizable.strings
+++ b/UI/MailerUI/English.lproj/Localizable.strings
@@ -221,3 +221,8 @@
 = "Moving a message into its own folder is impossible!";
 "Copying a message into its own folder is impossible!"
 = "Copying a message into its own folder is impossible!";
+
+/* Message editing */
+"error_validationfailed" = "Validation failed";
+"error_missingsubject" = "Subject is missing";
+"error_missingrecipients" = "No recipients specified";
diff --git a/UI/MailerUI/French.lproj/Localizable.strings b/UI/MailerUI/French.lproj/Localizable.strings
index b68ab6bb3..6c805eaa1 100644
--- a/UI/MailerUI/French.lproj/Localizable.strings
+++ b/UI/MailerUI/French.lproj/Localizable.strings
@@ -222,3 +222,8 @@
 = "Le déplacement d'un message dans son propre dossier est impossible.";
 "Copying a message into its own folder is impossible!"
 = "La copie d'un message dans son propre dossier est impossible.";
+
+/* Message editing */
+"error_validationfailed" = "Message invalide";
+"error_missingsubject" = "- le sujet est manquant";
+"error_missingrecipients" = "- aucun destinataire spécifié";
diff --git a/UI/MailerUI/German.lproj/Localizable.strings b/UI/MailerUI/German.lproj/Localizable.strings
index 31b91fe6b..40d826d2f 100644
--- a/UI/MailerUI/German.lproj/Localizable.strings
+++ b/UI/MailerUI/German.lproj/Localizable.strings
@@ -205,3 +205,8 @@
 = "Moving a message into its own folder is impossible!";
 "Copying a message into its own folder is impossible!"
 = "Copying a message into its own folder is impossible!";
+
+/* Message editing */
+"error_validationfailed" = "Validation failed";
+"error_missingsubject" = "Subject is missing";
+"error_missingrecipients" = "No recipients specified";