--- a/mail/messenger/addressbook/aboutAddressBook.ftl
+++ b/mail/messenger/addressbook/aboutAddressBook.ftl
@@ -150,18 +150,20 @@ about-addressbook-confirm-delete-contact
     { $count ->
         [one] 您确定要删除联系人 { $name } 吗？
        *[other] 您确定要删除下列 { $count } 位联系人吗？
     }
 
 ## Card list placeholder
 ## Shown when there are no cards in the list
 
+about-addressbook-placeholder-empty-book = 无联系人
 about-addressbook-placeholder-new-contact = 新建联系人
 about-addressbook-placeholder-searching = 正在搜索…
+about-addressbook-placeholder-no-search-results = 找不到联系人
 
 ## Details
 
 about-addressbook-prefer-display-name = 在邮件标题上方显示姓名
 about-addressbook-write-action-button = 写邮件
 about-addressbook-event-action-button = 事件
 about-addressbook-search-action-button = 搜索
 about-addressbook-begin-edit-contact-button = 编辑

--- a/mail/messenger/addressbook/vcard.ftl
+++ b/mail/messenger/addressbook/vcard.ftl
@@ -1,15 +1,16 @@
 # 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/.
 
 
 # Display Name
 
+vcard-displayname = 显示名称
 vcard-displayname-placeholder =
     .placeholder = { vcard-displayname }
 
 # Type selection
 
 vcard-entry-type-label = 类型
 vcard-entry-type-none = 无
 vcard-entry-type-custom = 自定义

--- a/mail/messenger/messageheader/headerFields.ftl
+++ b/mail/messenger/messageheader/headerFields.ftl
@@ -1,21 +1,34 @@
 # 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/.
 
 
 ## Header lists
 
+message-header-sender-list-name = 发件人
 message-header-cc-list-name = 抄送
 message-header-bcc-list-name = 密送
 message-header-newsgroups-list-name = 新闻组
 message-header-tags-list-name = 标签
 
 ## Other message headers.
 ## The field-separator is for screen readers to separate the field name from the field value.
 
+message-header-author-field = 作者<span data-l10n-name="field-separator">：</span>
+message-header-subject-field = 主题<span data-l10n-name="field-separator">：</span>
+message-header-date-field = 日期<span data-l10n-name="field-separator">：</span>
+message-header-user-agent-field = 用户代理<span data-l10n-name="field-separator">：</span>
+message-header-website-field = 网站<span data-l10n-name="field-separator">：</span>
+# An additional email header field that the user has chosen to display. Unlike
+# the other headers, the name of this header is not expected to be localised
+# because it is generated from the raw field name found in the email header.
+#   $fieldName (String) - The field name.
+message-header-custom-field = { $fieldName }<span data-l10n-name="field-separator">：</span>
 
 ##
 
+message-header-address-in-address-book-icon2 =
+    .alt = 在通讯录中
 message-header-address-in-address-book-button =
     .title = 编辑联系人
 message-ids-field-show-all = 显示全部

--- a/mail/messenger/messenger.ftl
+++ b/mail/messenger/messenger.ftl
@@ -118,29 +118,39 @@ context-menu-decrypt-to-folder =
 
 other-action-redirect-msg =
     .label = 重定向
 message-header-msg-flagged =
     .title = 已加星标
     .aria-label = 已加星标
 message-header-msg-not-flagged =
     .title = 非星标邮件
+# Variables:
+# $address (String) - The email address of the recipient this picture belongs to.
+message-header-recipient-avatar =
+    .alt = { $address } 的头像。
 
 ## Message header cutomize panel
 
 message-header-customize-panel-title = 消息标题设置
 message-header-customize-button-style =
     .value = 按钮样式
     .accesskey = B
 message-header-button-style-default =
     .label = 图标和文本
 message-header-button-style-text =
     .label = 文本
 message-header-button-style-icons =
     .label = 图标
+message-header-show-recipient-avatar =
+    .label = 显示发件人头像
+    .accesskey = p
+message-header-hide-label-column =
+    .label = 隐藏标签列
+    .accesskey = I
 message-header-large-subject =
     .label = 放大主题
     .accesskey = s
 
 ## Action Button Context Menu
 
 toolbar-context-menu-manage-extension =
     .label = 管理扩展

--- a/mail/messenger/messengercompose/messengercompose.ftl
+++ b/mail/messenger/messengercompose/messengercompose.ftl
@@ -180,16 +180,18 @@ smime-cert-issue-notification-many = 端到端加密功能需解决 { $count } 位收件人的证书问题。
 key-notification-disable-encryption =
     .label = 不加密
     .accesskey = D
     .tooltiptext = 禁用端到端加密
 key-notification-resolve =
     .label = 解决…
     .accesskey = R
     .tooltiptext = 打开 OpenPGP 密钥助手
+can-encrypt-smime-notification = S/MIME 端到端加密可用。
+can-encrypt-openpgp-notification = OpenPGP 端到端加密可用。
 can-e2e-encrypt-button =
     .label = 加密
     .accesskey = E
 
 ## Addressing Area
 
 to-address-row-label =
     .value = 收件人
@@ -350,11 +352,12 @@ cloud-file-attachment-error-title = 文件快传附件出错
 cloud-file-attachment-error = 由于本地文件移动或删除，文件快传附件 { $filename } 未能更新。
 # $filename (string) - name of the file that was renamed and caused the error
 cloud-file-account-error-title = 文件快传账户错误
 cloud-file-account-error = 由于文件快传已被删除，文件快传附件 { $filename } 未能更新。
 
 ## Link Preview
 
 link-preview-title = 链接预览
+link-preview-yes-replace = 好的
 
 ## Dictionary selection popup
 

--- a/mail/messenger/openpgp/keyAssistant.ftl
+++ b/mail/messenger/openpgp/keyAssistant.ftl
@@ -9,16 +9,20 @@ openpgp-key-assistant-title = OpenPGP 密钥助手
 openpgp-key-assistant-recipients-issue-header = 无法加密
 
 ## Resolve section
 
 openpgp-key-assistant-no-key-available = 无可用密钥。
 openpgp-key-assistant-multiple-keys = 多个密钥可用。
 # Variables:
 # $date (String) - The expiration date of the key.
+openpgp-key-assistant-key-accepted-expired = 一个接受的密钥已于 { $date } 过期。
+openpgp-key-assistant-keys-accepted-expired = 多个接受的密钥已过期。
+# Variables:
+# $date (String) - The expiration date of the key.
 openpgp-key-assistant-key-unaccepted-expired-one = 密钥已于 { $date } 过期。
 openpgp-key-assistant-key-unaccepted-expired-many = 多个密钥已过期。
 openpgp-key-assistant-key-fingerprint = 指纹
 openpgp-key-assistant-key-source =
     { $count ->
        *[other] 来源
     }
 openpgp-key-assistant-key-collected-keyserver = 密钥服务器