diff --git a/Resources/Plugins/reply-account/browser.js b/Resources/Plugins/reply-account/browser.js
index c8f876df..0e372eb9 100644
--- a/Resources/Plugins/reply-account/browser.js
+++ b/Resources/Plugins/reply-account/browser.js
@@ -4,41 +4,69 @@ enabled(){
   window.TDPF_loadConfigurationFile(this, "configuration.js", "configuration.default.js", obj => configuration = obj);
   
   this.uiInlineComposeTweetEvent = function(e, data){
-    var account = null;
+    var query;
     
-    if (configuration.useAdvancedSelector && configuration.customSelector){
-      var column = TD.controller.columnManager.get(data.element.closest("section.column").attr("data-column"));
-      var result = configuration.customSelector(column);
-      
-      if (typeof result === "string" && result[0] === '@'){
-        account = result.substring(1);
-      }
-    }
-    
-    if (account === null){
-      if (configuration.defaultAccount === false){
-        return;
-      }
-      else if (configuration.defaultAccount !== "" && configuration.defaultAccount[0] === '@'){
-        account = configuration.defaultAccount.substring(1);
-      }
-    }
-    
-    var identifier;
-    
-    if (account === null){
-      identifier = TD.storage.clientController.client.getDefaultAccount();
-    }
-    else{
-      var obj = TD.storage.accountController.getAccountFromUsername(account);
-      
-      if (obj.length === 0){
-        return;
+    if (configuration.useAdvancedSelector){
+      if (configuration.customSelector){
+        var column = TD.controller.columnManager.get(data.element.closest("section.column").attr("data-column"));
+        query = configuration.customSelector(column);
       }
       else{
-        identifier = obj[0].privateState.key;
+        $TD.alert("warning", "Plugin reply-account has invalid configuration: useAdvancedSelector is true, but customSelector function is missing");
+        return;
       }
     }
+    else{
+      query = configuration.defaultAccount;
+    }
+    
+    if (typeof query === "undefined"){
+      query = "#preferred";
+    }
+    
+    if (typeof query !== "string"){
+      return;
+    }
+    else if (query.length === 0){
+      $TD.alert("warning", "Plugin reply-account has invalid configuration: the requested account is empty");
+      return;
+    }
+    else if (query[0] !== '@' && query[0] !== '&'){
+      $TD.alert("warning", "Plugin reply-account has invalid configuration: the requested account does not begin with @ or #: "+query);
+      return;
+    }
+    
+    var identifier = null;
+    
+    switch(query){
+      case "#preferred":
+        identifier = TD.storage.clientController.client.getDefaultAccount();
+        break;
+      
+      case "#last":
+        // TODO
+        break;
+      
+      case "#default":
+        return;
+      
+      default:
+        if (query[0] === '@'){
+          var obj = TD.storage.accountController.getAccountFromUsername(query.substring(1));
+          
+          if (obj.length === 0){
+            $TD.alert("warning", "Plugin reply-account has invalid configuration: requested account not found: "+query);
+            return;
+          }
+          else{
+            identifier = obj[0].privateState.key;
+          }
+        }
+        else{
+          $TD.alert("warning", "Plugin reply-account has invalid configuration: unknown requested account query: "+query);
+          return;
+        }
+    }
     
     data.singleFrom = data.from = [ identifier ];
   };
diff --git a/Resources/Plugins/reply-account/configuration.default.js b/Resources/Plugins/reply-account/configuration.default.js
index e60ac077..5cacc0cd 100644
--- a/Resources/Plugins/reply-account/configuration.default.js
+++ b/Resources/Plugins/reply-account/configuration.default.js
@@ -13,13 +13,14 @@
    *
    * Set value of 'defaultAccount' to one of the following values:
    *
-   *   ""            to use your preferred TweetDeck account for all replies (default)
+   *   "#preferred"  to use your preferred TweetDeck account (the one used to log into TweetDeck)
+   *   "#last"       to specify the account that was selected last time
+   *   "#default"    to fall back to default TweetDeck behavior; useful for advanced configuration below, otherwise disable the plugin instead
    *   "@myAccount"  to specify an account name to use; has to be one of your registered account names
-   *   false         to fall back to default TweetDeck behavior; useful for advanced configuration below, otherwise disable the plugin instead
    *
    */
   
-  defaultAccount: "",
+  defaultAccount: "#preferred",
   
   /*
    * Advanced way of configuring the plugin
@@ -30,8 +31,8 @@
    * 1. Set value of 'useAdvancedSelector' to true
    * 2. Uncomment the 'customSelector' function, and replace the example code with your desired behavior
    *
-   * If 'customSelector' returns a string containing a full name of one of the registered accounts (including @), that account is used.
-   * If it returns anything else (for example false, undefined, or an account name that is not registered), it falls back to 'defaultAccount' behavior.
+   * The 'customSelector' function should return a string in one of the formats supported by 'defaultAccount'.
+   * If it returns anything else (for example, false or undefined), it falls back to 'defaultAccount' behavior.
    *
    * The 'column' parameter is a TweetDeck column object. If you want to see all properties of the object, open your browser, nagivate to TweetDeck,
    * log in, and run the following code in your browser console, which will return an object containing all of the column objects mapped to their IDs: