--- a/browser/browser/appmenu.ftl
+++ b/browser/browser/appmenu.ftl
@@ -81,16 +81,17 @@ appmenu-remote-tabs-opensettings =
 # This is shown when Sync is configured but this appears to be the only device attached to
 # the account. We also show links to download Firefox for android/ios.
 appmenu-remote-tabs-noclients = Hoffech chi weld eich tabiau o ddyfeisiau eraill yma?
 appmenu-remote-tabs-connectdevice =
     .label = Cysylltu Dyfais Arall
 appmenu-remote-tabs-welcome = Gweld rhestr o dabiau o'ch dyfeisiau eraill.
 appmenu-remote-tabs-unverified = Mae angen i'ch cyfrif cael ei gwirio.
 appmenuitem-fxa-toolbar-sync-now2 = Cydweddu Nawr
+appmenuitem-fxa-sign-in = Mewngofnodi i { -brand-product-name }
 appmenuitem-fxa-manage-account = Rheoli Cyfrif
 appmenu-fxa-header2 = { -fxaccount-brand-name }
 # Variables
 # $time (string) - Localized relative time since last sync (e.g. 1 second ago,
 # 3 hours ago, etc.)
 appmenu-fxa-last-sync = Cydweddwyd diwethaf { $time }
     .label = Cydweddwyd diwethaf { $time }
 appmenu-fxa-sync-and-save-data2 = Cydweddu a chadw data

--- a/browser/browser/sync.ftl
+++ b/browser/browser/sync.ftl
@@ -15,10 +15,12 @@ fxa-menu-sync-settings =
 fxa-menu-turn-on-sync =
     .value = Cychwyn Sync
 fxa-menu-turn-on-sync-default = Cychwyn Sync
 fxa-menu-connect-another-device =
     .label = Cysylltu Dyfais Arall…
 # This is shown dynamically within "Send tab to device" in fxa menu.
 fxa-menu-send-tab-to-device-syncnotready =
     .label = Cydweddu Dyfeisiau…
+# This is shown within "Send tab to device" in fxa menu if account is not configured.
+fxa-menu-send-tab-to-device-description = Anfon tab ar unwaith i unrhyw ddyfais rydych wedi mewngofnodi arni.
 fxa-menu-sign-out =
     .label = Allgofnodi…