diff --git a/WORKSPACE b/WORKSPACE
index caa6c1c..8be67bc 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -14,9 +14,9 @@
 
 http_archive(
     name = "io_bazel_rules_closure",
-    sha256 = "34abd9170fdbfdfc6f3b63f2c18cee3cbcb2ddbd5e3c97324add0aa7809ed875",
-    strip_prefix = "rules_closure-9d543facf886631e4ed379996e60ce3533188adc",
-    urls = ["https://github.com/bazelbuild/rules_closure/archive/9d543facf886631e4ed379996e60ce3533188adc.tar.gz"],
+    sha256 = "1c05fea22c9630cf1047f25d008780756373a60ddd4d2a6993cf9858279c5da6",
+    strip_prefix = "rules_closure-50d3dc9e6d27a5577a0f95708466718825d579f4",
+    urls = ["https://github.com/bazelbuild/rules_closure/archive/50d3dc9e6d27a5577a0f95708466718825d579f4.tar.gz"],
 )
 
 # Transitive dependency of rules_closure and protobuf
diff --git a/java/com/google/gerrit/gpg/server/PostGpgKeys.java b/java/com/google/gerrit/gpg/server/PostGpgKeys.java
index 57c95a9..f641902 100644
--- a/java/com/google/gerrit/gpg/server/PostGpgKeys.java
+++ b/java/com/google/gerrit/gpg/server/PostGpgKeys.java
@@ -193,10 +193,11 @@
       throws BadRequestException, ResourceConflictException, PGPException, IOException {
     try (PublicKeyStore store = storeProvider.get()) {
       List<String> addedKeys = new ArrayList<>();
+      IdentifiedUser user = rsrc.getUser();
       for (PGPPublicKeyRing keyRing : keyRings) {
         PGPPublicKey key = keyRing.getPublicKey();
         // Don't check web of trust; admins can fill in certifications later.
-        CheckResult result = checkerFactory.create(rsrc.getUser(), store).disableTrust().check(key);
+        CheckResult result = checkerFactory.create(user, store).disableTrust().check(key);
         if (!result.isOk()) {
           throw new BadRequestException(
               String.format(
@@ -211,7 +212,7 @@
       }
       CommitBuilder cb = new CommitBuilder();
       PersonIdent committer = serverIdent.get();
-      cb.setAuthor(rsrc.getUser().newCommitterIdent(committer.getWhen(), committer.getTimeZone()));
+      cb.setAuthor(user.newCommitterIdent(committer.getWhen(), committer.getTimeZone()));
       cb.setCommitter(committer);
 
       RefUpdate.Result saveResult = store.save(cb);
@@ -219,12 +220,14 @@
         case NEW:
         case FAST_FORWARD:
         case FORCED:
-          try {
-            addKeyFactory.create(rsrc.getUser(), addedKeys).send();
-          } catch (EmailException e) {
-            logger.atSevere().withCause(e).log(
-                "Cannot send GPG key added message to %s",
-                rsrc.getUser().getAccount().getPreferredEmail());
+          if (!addedKeys.isEmpty()) {
+            try {
+              addKeyFactory.create(user, addedKeys).send();
+            } catch (EmailException e) {
+              logger.atSevere().withCause(e).log(
+                  "Cannot send GPG key added message to %s",
+                  rsrc.getUser().getAccount().getPreferredEmail());
+            }
           }
           break;
         case NO_CHANGE:
diff --git a/java/com/google/gerrit/server/config/GerritGlobalModule.java b/java/com/google/gerrit/server/config/GerritGlobalModule.java
index f168ef9..59a55ab 100644
--- a/java/com/google/gerrit/server/config/GerritGlobalModule.java
+++ b/java/com/google/gerrit/server/config/GerritGlobalModule.java
@@ -140,19 +140,11 @@
 import com.google.gerrit.server.mail.EmailModule;
 import com.google.gerrit.server.mail.ListMailFilter;
 import com.google.gerrit.server.mail.MailFilter;
-import com.google.gerrit.server.mail.send.AddKeySender;
-import com.google.gerrit.server.mail.send.AddReviewerSender;
-import com.google.gerrit.server.mail.send.CreateChangeSender;
-import com.google.gerrit.server.mail.send.DeleteReviewerSender;
 import com.google.gerrit.server.mail.send.FromAddressGenerator;
 import com.google.gerrit.server.mail.send.FromAddressGeneratorProvider;
 import com.google.gerrit.server.mail.send.InboundEmailRejectionSender;
 import com.google.gerrit.server.mail.send.MailSoyTofuProvider;
 import com.google.gerrit.server.mail.send.MailTemplates;
-import com.google.gerrit.server.mail.send.MergedSender;
-import com.google.gerrit.server.mail.send.RegisterNewEmailSender;
-import com.google.gerrit.server.mail.send.ReplacePatchSetSender;
-import com.google.gerrit.server.mail.send.SetAssigneeSender;
 import com.google.gerrit.server.mime.FileTypeRegistry;
 import com.google.gerrit.server.mime.MimeUtilFileTypeRegistry;
 import com.google.gerrit.server.notedb.NoteDbModule;
@@ -255,22 +247,14 @@
     install(new SshAddressesModule());
     install(ThreadLocalRequestContext.module());
 
-    factory(AddReviewerSender.Factory.class);
-    factory(DeleteReviewerSender.Factory.class);
-    factory(AddKeySender.Factory.class);
     factory(CapabilityCollection.Factory.class);
     factory(ChangeData.AssistedFactory.class);
     factory(ChangeJson.AssistedFactory.class);
-    factory(CreateChangeSender.Factory.class);
     factory(LabelsJson.Factory.class);
-    factory(MergedSender.Factory.class);
     factory(MergeUtil.Factory.class);
     factory(PatchScriptFactory.Factory.class);
     factory(ProjectState.Factory.class);
-    factory(RegisterNewEmailSender.Factory.class);
-    factory(ReplacePatchSetSender.Factory.class);
     factory(RevisionJson.Factory.class);
-    factory(SetAssigneeSender.Factory.class);
     factory(InboundEmailRejectionSender.Factory.class);
     bind(PermissionCollection.Factory.class);
     bind(AccountVisibility.class).toProvider(AccountVisibilityProvider.class).in(SINGLETON);
diff --git a/java/com/google/gerrit/server/mail/EmailModule.java b/java/com/google/gerrit/server/mail/EmailModule.java
index 9bf97dd..862293e 100644
--- a/java/com/google/gerrit/server/mail/EmailModule.java
+++ b/java/com/google/gerrit/server/mail/EmailModule.java
@@ -16,20 +16,34 @@
 
 import com.google.gerrit.extensions.config.FactoryModule;
 import com.google.gerrit.server.mail.send.AbandonedSender;
+import com.google.gerrit.server.mail.send.AddKeySender;
+import com.google.gerrit.server.mail.send.AddReviewerSender;
 import com.google.gerrit.server.mail.send.CommentSender;
+import com.google.gerrit.server.mail.send.CreateChangeSender;
 import com.google.gerrit.server.mail.send.DeleteReviewerSender;
 import com.google.gerrit.server.mail.send.DeleteVoteSender;
+import com.google.gerrit.server.mail.send.MergedSender;
+import com.google.gerrit.server.mail.send.RegisterNewEmailSender;
+import com.google.gerrit.server.mail.send.ReplacePatchSetSender;
 import com.google.gerrit.server.mail.send.RestoredSender;
 import com.google.gerrit.server.mail.send.RevertedSender;
+import com.google.gerrit.server.mail.send.SetAssigneeSender;
 
 public class EmailModule extends FactoryModule {
   @Override
   protected void configure() {
     factory(AbandonedSender.Factory.class);
+    factory(AddKeySender.Factory.class);
+    factory(AddReviewerSender.Factory.class);
     factory(CommentSender.Factory.class);
+    factory(CreateChangeSender.Factory.class);
     factory(DeleteReviewerSender.Factory.class);
     factory(DeleteVoteSender.Factory.class);
+    factory(MergedSender.Factory.class);
+    factory(RegisterNewEmailSender.Factory.class);
+    factory(ReplacePatchSetSender.Factory.class);
     factory(RestoredSender.Factory.class);
     factory(RevertedSender.Factory.class);
+    factory(SetAssigneeSender.Factory.class);
   }
 }