diff --git a/Documentation/access-control.txt b/Documentation/access-control.txt
index 348649d..cf89982 100644
--- a/Documentation/access-control.txt
+++ b/Documentation/access-control.txt
@@ -1417,8 +1417,8 @@
 
 Allow to link:cmd-set-account.html[modify accounts over the ssh prompt].
 This capability allows the granted group members to modify any user account
-setting. In addition this capability is required to view secondary emails
-of other accounts.
+setting. In addition this capability allows to view secondary emails of other
+accounts.
 
 [[capability_priority]]
 === Priority
@@ -1520,7 +1520,8 @@
 
 This capability allows to view all accounts but not all account data.
 E.g. secondary emails of all accounts can only be viewed with the
-link:#capability_modifyAccount[Modify Account] capability.
+link:#capability_viewSecondaryEmails[View Secondary Emails] capability
+or the link:#capability_modifyAccount[Modify Account] capability.
 
 
 [[capability_viewCaches]]
@@ -1553,6 +1554,15 @@
 link:cmd-show-queue.html[look at the Gerrit task queue via ssh].
 
 
+[[capability_viewSecondaryEmails]]
+=== View Secondary Emails
+
+Allows viewing secondary emails of other accounts.
+
+Users with the link:#capability_modifyAccount[Modify Account] capability have
+this capbility implicitly.
+
+
 [[reference]]
 == Permission evaluation reference
 
diff --git a/Documentation/rest-api-accounts.txt b/Documentation/rest-api-accounts.txt
index 7e06e4a..7646777 100644
--- a/Documentation/rest-api-accounts.txt
+++ b/Documentation/rest-api-accounts.txt
@@ -2316,6 +2316,9 @@
 link:access-control.html#capability_viewPlugins[View Plugins] capability.
 |`viewQueue`         |not set if `false`|Whether the user has the
 link:access-control.html#capability_viewQueue[View Queue] capability.
+|`viewSecondaryEmails`|not set if `false`|Whether the user has the
+link:access-control.html#capability_viewSecondaryEmails[View Secondary
+Emails] capability.
 |=================================
 
 [[contributor-agreement-info]]
diff --git a/Documentation/user-search.txt b/Documentation/user-search.txt
index 4293fd6..67b8d75 100644
--- a/Documentation/user-search.txt
+++ b/Documentation/user-search.txt
@@ -647,7 +647,7 @@
 last update (comment or patch set) from the change owner.
 
 [[author]]
-author:'AUTHOR'::
+author:'AUTHOR', a:'AUTHOR'::
 +
 Changes where 'AUTHOR' is the author of the current patch set. 'AUTHOR' may be
 the author's exact email address, or part of the name or email address. The
diff --git a/java/com/google/gerrit/common/data/GlobalCapability.java b/java/com/google/gerrit/common/data/GlobalCapability.java
index c7a9a63..23151c2 100644
--- a/java/com/google/gerrit/common/data/GlobalCapability.java
+++ b/java/com/google/gerrit/common/data/GlobalCapability.java
@@ -129,6 +129,9 @@
   /** Can view all pending tasks in the queue (not just the filtered set). */
   public static final String VIEW_QUEUE = "viewQueue";
 
+  /** Can view secondary emails of other accounts. */
+  public static final String VIEW_SECONDARY_EMAILS = "viewSecondaryEmails";
+
   private static final List<String> NAMES_ALL;
   private static final List<String> NAMES_LC;
   private static final String[] RANGE_NAMES = {
@@ -160,6 +163,7 @@
     NAMES_ALL.add(VIEW_CONNECTIONS);
     NAMES_ALL.add(VIEW_PLUGINS);
     NAMES_ALL.add(VIEW_QUEUE);
+    NAMES_ALL.add(VIEW_SECONDARY_EMAILS);
 
     NAMES_LC = new ArrayList<>(NAMES_ALL.size());
     for (String name : NAMES_ALL) {
diff --git a/java/com/google/gerrit/server/account/AccountResolver.java b/java/com/google/gerrit/server/account/AccountResolver.java
index 1818b1b..2020d2f 100644
--- a/java/com/google/gerrit/server/account/AccountResolver.java
+++ b/java/com/google/gerrit/server/account/AccountResolver.java
@@ -434,16 +434,16 @@
 
     @Override
     public Stream<AccountState> search(String input, CurrentUser asUser) throws IOException {
-      boolean canSeeSecondaryEmails = false;
+      boolean canViewSecondaryEmails = false;
       try {
-        if (permissionBackend.user(asUser).test(GlobalPermission.MODIFY_ACCOUNT)) {
-          canSeeSecondaryEmails = true;
+        if (permissionBackend.user(asUser).test(GlobalPermission.VIEW_SECONDARY_EMAILS)) {
+          canViewSecondaryEmails = true;
         }
       } catch (PermissionBackendException e) {
         // remains false
       }
 
-      if (canSeeSecondaryEmails) {
+      if (canViewSecondaryEmails) {
         return toAccountStates(emails.getAccountFor(input));
       }
 
@@ -549,15 +549,15 @@
       // up with a reasonable result list.
       // TODO(dborowitz): This doesn't match the documentation; consider whether it's possible to be
       // more strict here.
-      boolean canSeeSecondaryEmails = false;
+      boolean canViewSecondaryEmails = false;
       try {
-        if (permissionBackend.user(asUser).test(GlobalPermission.MODIFY_ACCOUNT)) {
-          canSeeSecondaryEmails = true;
+        if (permissionBackend.user(asUser).test(GlobalPermission.VIEW_SECONDARY_EMAILS)) {
+          canViewSecondaryEmails = true;
         }
       } catch (PermissionBackendException e) {
         // remains false
       }
-      return accountQueryProvider.get().byDefault(input, canSeeSecondaryEmails).stream();
+      return accountQueryProvider.get().byDefault(input, canViewSecondaryEmails).stream();
     }
 
     @Override
diff --git a/java/com/google/gerrit/server/account/InternalAccountDirectory.java b/java/com/google/gerrit/server/account/InternalAccountDirectory.java
index b895834..64b8ec0 100644
--- a/java/com/google/gerrit/server/account/InternalAccountDirectory.java
+++ b/java/com/google/gerrit/server/account/InternalAccountDirectory.java
@@ -96,12 +96,12 @@
       return;
     }
 
-    boolean canModifyAccount = false;
+    boolean canViewSecondaryEmails = false;
     Account.Id currentUserId = null;
     if (self.get().isIdentifiedUser()) {
       currentUserId = self.get().getAccountId();
-      if (permissionBackend.currentUser().test(GlobalPermission.MODIFY_ACCOUNT)) {
-        canModifyAccount = true;
+      if (permissionBackend.currentUser().test(GlobalPermission.VIEW_SECONDARY_EMAILS)) {
+        canViewSecondaryEmails = true;
       }
     }
 
@@ -115,7 +115,7 @@
       if (state != null) {
         if (!options.contains(FillOptions.SECONDARY_EMAILS)
             || Objects.equals(currentUserId, state.account().id())
-            || canModifyAccount) {
+            || canViewSecondaryEmails) {
           fill(info, accountStates.get(id), options);
         } else {
           // user is not allowed to see secondary emails
diff --git a/java/com/google/gerrit/server/config/CapabilityConstants.java b/java/com/google/gerrit/server/config/CapabilityConstants.java
index 59819bb..1f799c6 100644
--- a/java/com/google/gerrit/server/config/CapabilityConstants.java
+++ b/java/com/google/gerrit/server/config/CapabilityConstants.java
@@ -45,4 +45,5 @@
   public String viewConnections;
   public String viewPlugins;
   public String viewQueue;
+  public String viewSecondaryEmails;
 }
diff --git a/java/com/google/gerrit/server/index/account/AccountField.java b/java/com/google/gerrit/server/index/account/AccountField.java
index cc86ffc..e675003 100644
--- a/java/com/google/gerrit/server/index/account/AccountField.java
+++ b/java/com/google/gerrit/server/index/account/AccountField.java
@@ -66,7 +66,8 @@
    * External IDs.
    *
    * <p>This field includes secondary emails. Use this field only if the current user is allowed to
-   * see secondary emails (requires the {@link GlobalCapability#MODIFY_ACCOUNT} capability).
+   * see secondary emails (requires the {@link GlobalCapability#VIEW_SECONDARY_EMAILS} capability or
+   * the {@link GlobalCapability#MODIFY_ACCOUNT} capability).
    */
   public static final IndexedField<AccountState, Iterable<String>> EXTERNAL_ID_FIELD =
       IndexedField.<AccountState>iterableStringBuilder("ExternalId")
@@ -80,8 +81,9 @@
    * Fuzzy prefix match on name and email parts.
    *
    * <p>This field includes parts from the secondary emails. Use this field only if the current user
-   * is allowed to see secondary emails (requires the {@link GlobalCapability#MODIFY_ACCOUNT}
-   * capability).
+   * is allowed to see secondary emails (requires requires the {@link
+   * GlobalCapability#VIEW_SECONDARY_EMAILS} capability or the {@link
+   * GlobalCapability#MODIFY_ACCOUNT} capability).
    *
    * <p>Use the {@link AccountField#NAME_PART_NO_SECONDARY_EMAIL_SPEC} if the current user can't see
    * secondary emails.
diff --git a/java/com/google/gerrit/server/permissions/DefaultPermissionBackend.java b/java/com/google/gerrit/server/permissions/DefaultPermissionBackend.java
index bf4d05a..a4ee052 100644
--- a/java/com/google/gerrit/server/permissions/DefaultPermissionBackend.java
+++ b/java/com/google/gerrit/server/permissions/DefaultPermissionBackend.java
@@ -195,12 +195,17 @@
         case MODIFY_ACCOUNT:
         case READ_AS:
         case STREAM_EVENTS:
+        case VIEW_ACCESS:
         case VIEW_ALL_ACCOUNTS:
         case VIEW_CONNECTIONS:
         case VIEW_PLUGINS:
-        case VIEW_ACCESS:
           return has(globalPermissionName(perm)) || isAdmin();
 
+        case VIEW_SECONDARY_EMAILS:
+          return has(globalPermissionName(perm))
+              || has(globalPermissionName(GlobalPermission.MODIFY_ACCOUNT))
+              || isAdmin();
+
         case ACCESS_DATABASE:
         case RUN_AS:
           return has(globalPermissionName(perm));
diff --git a/java/com/google/gerrit/server/permissions/DefaultPermissionMappings.java b/java/com/google/gerrit/server/permissions/DefaultPermissionMappings.java
index da24dcd..958de1b 100644
--- a/java/com/google/gerrit/server/permissions/DefaultPermissionMappings.java
+++ b/java/com/google/gerrit/server/permissions/DefaultPermissionMappings.java
@@ -61,6 +61,7 @@
           .put(GlobalPermission.VIEW_CONNECTIONS, GlobalCapability.VIEW_CONNECTIONS)
           .put(GlobalPermission.VIEW_PLUGINS, GlobalCapability.VIEW_PLUGINS)
           .put(GlobalPermission.VIEW_QUEUE, GlobalCapability.VIEW_QUEUE)
+          .put(GlobalPermission.VIEW_SECONDARY_EMAILS, GlobalCapability.VIEW_SECONDARY_EMAILS)
           .build();
 
   static {
diff --git a/java/com/google/gerrit/server/permissions/GlobalPermission.java b/java/com/google/gerrit/server/permissions/GlobalPermission.java
index c0b44e5..3429978 100644
--- a/java/com/google/gerrit/server/permissions/GlobalPermission.java
+++ b/java/com/google/gerrit/server/permissions/GlobalPermission.java
@@ -58,7 +58,8 @@
   VIEW_CACHES,
   VIEW_CONNECTIONS,
   VIEW_PLUGINS,
-  VIEW_QUEUE;
+  VIEW_QUEUE,
+  VIEW_SECONDARY_EMAILS;
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
diff --git a/java/com/google/gerrit/server/query/account/AccountQueryBuilder.java b/java/com/google/gerrit/server/query/account/AccountQueryBuilder.java
index d5c4a97..2f4a923 100644
--- a/java/com/google/gerrit/server/query/account/AccountQueryBuilder.java
+++ b/java/com/google/gerrit/server/query/account/AccountQueryBuilder.java
@@ -151,7 +151,7 @@
   @Operator
   public Predicate<AccountState> email(String email)
       throws PermissionBackendException, QueryParseException {
-    if (canSeeSecondaryEmails()) {
+    if (canViewSecondaryEmails()) {
       return AccountPredicates.emailIncludingSecondaryEmails(email);
     }
 
@@ -185,7 +185,7 @@
   @Operator
   public Predicate<AccountState> name(String name)
       throws PermissionBackendException, QueryParseException {
-    if (canSeeSecondaryEmails()) {
+    if (canViewSecondaryEmails()) {
       return AccountPredicates.equalsNameIncludingSecondaryEmails(name);
     }
 
@@ -210,7 +210,7 @@
   @Override
   protected Predicate<AccountState> defaultField(String query) {
     Predicate<AccountState> defaultPredicate =
-        AccountPredicates.defaultPredicate(args.schema(), checkedCanSeeSecondaryEmails(), query);
+        AccountPredicates.defaultPredicate(args.schema(), checkedCanViewSecondaryEmails(), query);
     if (query.startsWith("cansee:")) {
       try {
         return cansee(query.substring(7));
@@ -233,13 +233,13 @@
     return args.getIdentifiedUser().getAccountId();
   }
 
-  private boolean canSeeSecondaryEmails() throws PermissionBackendException, QueryParseException {
-    return args.permissionBackend.user(args.getUser()).test(GlobalPermission.MODIFY_ACCOUNT);
+  private boolean canViewSecondaryEmails() throws PermissionBackendException, QueryParseException {
+    return args.permissionBackend.user(args.getUser()).test(GlobalPermission.VIEW_SECONDARY_EMAILS);
   }
 
-  private boolean checkedCanSeeSecondaryEmails() {
+  private boolean checkedCanViewSecondaryEmails() {
     try {
-      return canSeeSecondaryEmails();
+      return canViewSecondaryEmails();
     } catch (PermissionBackendException e) {
       logger.atSevere().withCause(e).log("Permission check failed");
       return false;
diff --git a/java/com/google/gerrit/server/query/change/ChangeQueryBuilder.java b/java/com/google/gerrit/server/query/change/ChangeQueryBuilder.java
index ef067a1..57b59ef 100644
--- a/java/com/google/gerrit/server/query/change/ChangeQueryBuilder.java
+++ b/java/com/google/gerrit/server/query/change/ChangeQueryBuilder.java
@@ -1539,6 +1539,11 @@
   }
 
   @Operator
+  public Predicate<ChangeData> a(String who) throws QueryParseException {
+    return author(who);
+  }
+
+  @Operator
   public Predicate<ChangeData> author(String who) throws QueryParseException {
     return getAuthorOrCommitterPredicate(
         who.trim(), ChangePredicates::exactAuthor, ChangePredicates::author);
diff --git a/java/com/google/gerrit/server/restapi/account/GetEmails.java b/java/com/google/gerrit/server/restapi/account/GetEmails.java
index 4d70eb9..a518532 100644
--- a/java/com/google/gerrit/server/restapi/account/GetEmails.java
+++ b/java/com/google/gerrit/server/restapi/account/GetEmails.java
@@ -52,7 +52,7 @@
   public Response<List<EmailInfo>> apply(AccountResource rsrc)
       throws AuthException, PermissionBackendException {
     if (!self.get().hasSameAccountId(rsrc.getUser())) {
-      permissionBackend.currentUser().check(GlobalPermission.MODIFY_ACCOUNT);
+      permissionBackend.currentUser().check(GlobalPermission.VIEW_SECONDARY_EMAILS);
     }
     return Response.ok(
         rsrc.getUser().getEmailAddresses().stream()
diff --git a/java/com/google/gerrit/server/restapi/account/QueryAccounts.java b/java/com/google/gerrit/server/restapi/account/QueryAccounts.java
index 79737f3..9fc0c42 100644
--- a/java/com/google/gerrit/server/restapi/account/QueryAccounts.java
+++ b/java/com/google/gerrit/server/restapi/account/QueryAccounts.java
@@ -173,7 +173,7 @@
     }
     boolean modifyAccountCapabilityChecked = false;
     if (options.contains(ListAccountsOption.ALL_EMAILS)) {
-      permissionBackend.currentUser().check(GlobalPermission.MODIFY_ACCOUNT);
+      permissionBackend.currentUser().check(GlobalPermission.VIEW_SECONDARY_EMAILS);
       modifyAccountCapabilityChecked = true;
       fillOptions.add(FillOptions.EMAIL);
       fillOptions.add(FillOptions.SECONDARY_EMAILS);
@@ -185,7 +185,7 @@
       if (modifyAccountCapabilityChecked) {
         fillOptions.add(FillOptions.SECONDARY_EMAILS);
       } else {
-        if (permissionBackend.currentUser().test(GlobalPermission.MODIFY_ACCOUNT)) {
+        if (permissionBackend.currentUser().test(GlobalPermission.VIEW_SECONDARY_EMAILS)) {
           fillOptions.add(FillOptions.SECONDARY_EMAILS);
         }
       }
diff --git a/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java b/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
index a9a0b70..dd04200 100644
--- a/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
@@ -991,14 +991,15 @@
   }
 
   @Test
-  public void cannotGetEmailsOfOtherAccountWithoutModifyAccount() throws Exception {
+  public void cannotGetEmailsOfOtherAccountWithoutViewSecondaryEmailsAndWithoutModifyAccount()
+      throws Exception {
     String email = "preferred2@example.com";
     TestAccount foo = accountCreator.create(name("foo"), email, "Foo", null);
 
     requestScopeOperations.setApiUser(user.id());
     AuthException thrown =
         assertThrows(AuthException.class, () -> gApi.accounts().id(foo.id().get()).getEmails());
-    assertThat(thrown).hasMessageThat().contains("modify account not permitted");
+    assertThat(thrown).hasMessageThat().contains("view secondary emails not permitted");
   }
 
   @Test
diff --git a/javatests/com/google/gerrit/acceptance/api/change/QueryChangesIT.java b/javatests/com/google/gerrit/acceptance/api/change/QueryChangesIT.java
index 43c8684..3f3ad37 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/QueryChangesIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/QueryChangesIT.java
@@ -549,6 +549,19 @@
   @Test
   public void changesFoundWhenQueryingBySecondaryEmailWithModifyAccountCapability()
       throws Exception {
+    testCangesFoundWhenQueryingBySecondaryEmailWithModifyAccountCapability(
+        GlobalCapability.MODIFY_ACCOUNT);
+  }
+
+  @Test
+  public void changesFoundWhenQueryingBySecondaryEmailWithViewSecondaryEmailsCapability()
+      throws Exception {
+    testCangesFoundWhenQueryingBySecondaryEmailWithModifyAccountCapability(
+        GlobalCapability.VIEW_SECONDARY_EMAILS);
+  }
+
+  private void testCangesFoundWhenQueryingBySecondaryEmailWithModifyAccountCapability(
+      String globalCapability) throws Exception {
     String secondaryOwnerEmail = "owner-secondary@example.com";
     Account.Id owner =
         accountOperations
@@ -574,7 +587,7 @@
 
     projectOperations
         .allProjectsForUpdate()
-        .add(allowCapability(GlobalCapability.MODIFY_ACCOUNT).group(REGISTERED_USERS))
+        .add(allowCapability(globalCapability).group(REGISTERED_USERS))
         .update();
 
     requestScopeOperations.setApiUser(user.id());
diff --git a/javatests/com/google/gerrit/acceptance/rest/account/CapabilityInfo.java b/javatests/com/google/gerrit/acceptance/rest/account/CapabilityInfo.java
index 7598062..3ce6d8d 100644
--- a/javatests/com/google/gerrit/acceptance/rest/account/CapabilityInfo.java
+++ b/javatests/com/google/gerrit/acceptance/rest/account/CapabilityInfo.java
@@ -38,6 +38,7 @@
   public boolean viewConnections;
   public boolean viewPlugins;
   public boolean viewQueue;
+  public boolean viewSecondaryEmails;
 
   static class QueryLimit {
     short min;
diff --git a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
index 0f6245f..a188251 100644
--- a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
+++ b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
@@ -676,11 +676,21 @@
   }
 
   @Test
+  public void byAuthorExact_byAlias() throws Exception {
+    byAuthorOrCommitterExact("a:");
+  }
+
+  @Test
   public void byAuthorFullText() throws Exception {
     byAuthorOrCommitterFullText("author:");
   }
 
   @Test
+  public void byAuthorFullText_byAlias() throws Exception {
+    byAuthorOrCommitterFullText("a:");
+  }
+
+  @Test
   public void byCommitterExact() throws Exception {
     byAuthorOrCommitterExact("committer:");
   }
diff --git a/resources/com/google/gerrit/server/config/CapabilityConstants.properties b/resources/com/google/gerrit/server/config/CapabilityConstants.properties
index 1a355eb..b6aca6f 100644
--- a/resources/com/google/gerrit/server/config/CapabilityConstants.properties
+++ b/resources/com/google/gerrit/server/config/CapabilityConstants.properties
@@ -21,3 +21,4 @@
 viewConnections = View Connections
 viewPlugins = View Plugins
 viewQueue = View Queue
+viewSecondaryEmails = View Secondary Emails