diff --git a/UI/MailerUI/English.lproj/Localizable.strings b/UI/MailerUI/English.lproj/Localizable.strings
index bafd2d681..58a7fd8fa 100644
--- a/UI/MailerUI/English.lproj/Localizable.strings
+++ b/UI/MailerUI/English.lproj/Localizable.strings
@@ -171,6 +171,7 @@
 /* MailListView */
 "Sender" = "Sender";
 "Subject or Sender" = "Subject or Sender";
+"Subject or Recipient" = "Subject or Recipient";
 "To or Cc" = "To or Cc";
 "Entire Message" = "Entire Message";
 "Date"          = "Date";
diff --git a/UI/MailerUI/French.lproj/Localizable.strings b/UI/MailerUI/French.lproj/Localizable.strings
index e70f62520..c2c79cda5 100644
--- a/UI/MailerUI/French.lproj/Localizable.strings
+++ b/UI/MailerUI/French.lproj/Localizable.strings
@@ -171,6 +171,7 @@
 /* MailListView */
 "Sender" = "Expéditeur";
 "Subject or Sender" = "Sujet ou expéditeur";
+"Subject or Recipient" = "Sujet ou destinataire";
 "To or Cc" = "Pour ou Copie à";
 "Entire Message" = "Message Complet";
 "Date"          = "Date";
diff --git a/UI/Templates/MailerUI/UIxMailFolderTemplate.wox b/UI/Templates/MailerUI/UIxMailFolderTemplate.wox
index e0fa2ea0d..7e35806fc 100644
--- a/UI/Templates/MailerUI/UIxMailFolderTemplate.wox
+++ b/UI/Templates/MailerUI/UIxMailFolderTemplate.wox
@@ -87,11 +87,16 @@
                 <md-icon label:aria-label="Subject">{{ mailbox.sortedBy('subject') ? 'check' : null }}</md-icon> <var:string label:value="Subject"/>
               </md-button>
             </md-menu-item>
-            <md-menu-item>
+            <md-menu-item ng-if="!mailbox.selectedFolder.isSentFolder">
               <md-button ng-click="mailbox.sort('from')">
                 <md-icon label:aria-label="From">{{ mailbox.sortedBy('from') ? 'check' : null }}</md-icon> <var:string label:value="From"/>
               </md-button>
             </md-menu-item>
+            <md-menu-item ng-if="mailbox.selectedFolder.isSentFolder">
+              <md-button ng-click="mailbox.sort('to')">
+                <md-icon label:aria-label="To">{{ mailbox.sortedBy('to') ? 'check' : null }}</md-icon> <var:string label:value="To"/>
+              </md-button>
+            </md-menu-item>
             <md-menu-item>
               <md-button ng-click="mailbox.sort('date')">
                 <md-icon label:aria-label="Date">{{ mailbox.sortedBy('date') ? 'check' : null }}</md-icon> <var:string label:value="Date"/>
@@ -143,7 +148,8 @@
         </md-input-container>
         <md-input-container flex="25">
           <md-select label:aria-label="Search scope">
-            <md-option value="subject_or_from" selected="selected"><var:string label:value="Subject or Sender"/></md-option>
+            <md-option value="subject_or_from" selected="selected" ng-if="!mailbox.selectedFolder.isSentFolder"><var:string label:value="Subject or Sender"/></md-option>
+            <md-option value="subject_or_to" selected="selected" ng-if="mailbox.selectedFolder.isSentFolder"><var:string label:value="Subject or Recipient"/></md-option>
             <md-option value="subject"><var:string label:value="Subject"/></md-option>
             <md-option value="from"><var:string label:value="Sender"/></md-option>
             <md-option value="to_or_cc"><var:string label:value="To or Cc"/></md-option>
diff --git a/UI/WebServerResources/js/Mailer/Mailbox.service.js b/UI/WebServerResources/js/Mailer/Mailbox.service.js
index 6408a5cc5..4a53b7fd6 100644
--- a/UI/WebServerResources/js/Mailer/Mailbox.service.js
+++ b/UI/WebServerResources/js/Mailer/Mailbox.service.js
@@ -405,6 +405,7 @@
       this.$highlightWords = [];
       filters.forEach(filter => {
         if ("subject_or_from" == filter.searchBy
+          || "subject_or_to" == filter.searchBy
           || "contains" == filter.searchBy
           || "body" == filter.searchBy
           || "from" == filter.searchBy