--- a/mail/messenger/preferences/preferences.ftl
+++ b/mail/messenger/preferences/preferences.ftl
@@ -442,16 +442,24 @@ restore-html-label =
     .accesskey = R
 default-format-label =
     .label = 默认使用段落而非正文文本格式
     .accesskey = P
 format-description = 配置文本格式行为：
 send-options-label =
     .label = 发送选项…
     .accesskey = S
+compose-send-automatic-option =
+    .label = 自动
+compose-send-both-option =
+    .label = HTML 和纯文本
+compose-send-html-option =
+    .label = 仅 HTML
+compose-send-plain-option =
+    .label = 仅纯文本
 autocomplete-description = 对消息进行地址查找时，在下列位置搜索：
 ab-label =
     .label = 本地通讯录
     .accesskey = L
 directories-label =
     .label = 目录服务器：
     .accesskey = D
 directories-none-label =
@@ -659,16 +667,18 @@ chat-custom-sound-label =
 chat-browse-sound-button =
     .label = 浏览…
     .accesskey = B
 theme-label =
     .value = 主题：
     .accesskey = T
 style-thunderbird =
     .label = Thunderbird
+style-mail =
+    .label = { -brand-short-name }
 style-bubbles =
     .label = 气泡
 style-dark =
     .label = 黑夜
 style-paper =
     .label = 纸张
 style-simple =
     .label = 简朴