diff --git a/src/flux/stores/account-store.coffee b/src/flux/stores/account-store.coffee
index e0f8e6429..85b527f06 100644
--- a/src/flux/stores/account-store.coffee
+++ b/src/flux/stores/account-store.coffee
@@ -218,6 +218,9 @@ class AccountStore extends NylasStore
   accounts: =>
     @_accounts
 
+  accountIds: =>
+    _.pluck(@_accounts, 'id')
+
   accountsForItems: (items) =>
     accounts = {}
     items.forEach ({accountId}) =>
diff --git a/src/flux/stores/focused-perspective-store.coffee b/src/flux/stores/focused-perspective-store.coffee
index 5be1e93e0..58d60b93d 100644
--- a/src/flux/stores/focused-perspective-store.coffee
+++ b/src/flux/stores/focused-perspective-store.coffee
@@ -116,7 +116,10 @@ class FocusedPerspectiveStore extends NylasStore
     @_current
 
   sidebarAccountIds: =>
-    NylasEnv.savedState.sidebarAccountIds ?= AccountStore.accounts().map((acc) => acc.id)
+    NylasEnv.savedState.sidebarAccountIds ?= AccountStore.accountIds()
+    accIdsAreInvalid = not NylasEnv.savedState.sidebarAccountIds.every((accId) => AccountStore.accountForId(accId)?)
+    if accIdsAreInvalid
+      NylasEnv.savedState.sidebarAccountIds = AccountStore.accountIds()
     return NylasEnv.savedState.sidebarAccountIds
 
 module.exports = new FocusedPerspectiveStore()