diff --git a/internal_packages/thread-list/lib/thread-list.cjsx b/internal_packages/thread-list/lib/thread-list.cjsx
index 6862ceacd..b54b76e2e 100644
--- a/internal_packages/thread-list/lib/thread-list.cjsx
+++ b/internal_packages/thread-list/lib/thread-list.cjsx
@@ -58,6 +58,7 @@ class ThreadList extends React.Component
     'application:mark-unimportant': => @_onSetImportant(false)
     'application:mark-as-unread': => @_onSetUnread(true)
     'application:mark-as-read': => @_onSetUnread(false)
+    'application:report-as-spam': => @_onMarkAsSpam(false)
     'application:remove-and-previous': =>
       @_shift(offset: -1, afterRunning: @_onRemoveFromView)
     'application:remove-and-next': =>
@@ -176,6 +177,14 @@ class ThreadList extends React.Component
     Actions.queueTask(task)
     Actions.popSheet()
 
+  _onMarkAsSpam: =>
+    threads = @_threadsForKeyboardAction()
+    return unless threads
+    tasks = TaskFactory.tasksForMarkingAsSpam(
+      threads: threads
+    )
+    Actions.queueTasks(tasks)
+
   _onRemoveFromView: =>
     threads = @_threadsForKeyboardAction()
     backspaceDelete = NylasEnv.config.get('core.reading.backspaceDelete')
diff --git a/src/flux/stores/category-store.coffee b/src/flux/stores/category-store.coffee
index 23b78a487..1e4b54e9d 100644
--- a/src/flux/stores/category-store.coffee
+++ b/src/flux/stores/category-store.coffee
@@ -74,6 +74,8 @@ class CategoryStore extends NylasStore
 
     return _.findWhere(@_standardCategories[asAccountId(accountOrId)], {name})
 
+  # Public: Returns the set of all standard categories that match the given
+  # names for each of the provided accounts
   getStandardCategories: (accountsOrIds, names...) ->
     if Array.isArray(accountsOrIds)
       res = []
diff --git a/src/flux/tasks/task-factory.coffee b/src/flux/tasks/task-factory.coffee
index 90c57732f..ae7a82ddc 100644
--- a/src/flux/tasks/task-factory.coffee
+++ b/src/flux/tasks/task-factory.coffee
@@ -71,6 +71,13 @@ class TaskFactory
         labelsToRemove: [category]
         labelsToAdd: labelsToAdd
 
+  tasksForMarkingAsSpam: ({threads}) =>
+    @tasksForApplyingCategories
+      threads: threads,
+      categoriesToRemove: (accountId) ->
+        [CategoryStore.getStandardCategory(accountId, 'inbox')]
+      categoryToAdd: (accountId) -> CategoryStore.getStandardCategory(accountId, 'spam')
+
   tasksForArchiving: ({threads, fromPerspective}) =>
     @tasksForApplyingCategories
       threads: threads,
diff --git a/src/mailbox-perspective.coffee b/src/mailbox-perspective.coffee
index 2022c762a..dbaff39c6 100644
--- a/src/mailbox-perspective.coffee
+++ b/src/mailbox-perspective.coffee
@@ -43,9 +43,6 @@ class MailboxPerspective
   @forInbox: (accountsOrIds) =>
     @forStandardCategories(accountsOrIds, 'inbox')
 
-  @forAll: (accountsOrIds) =>
-    @forStandardCategories(accountsOrIds, 'all')
-
 
   # Instance Methods