diff --git a/apps/provisioning_api/lib/Users.php b/apps/provisioning_api/lib/Users.php
index 1be707f056b2..72b67cdc63e2 100644
--- a/apps/provisioning_api/lib/Users.php
+++ b/apps/provisioning_api/lib/Users.php
@@ -310,8 +310,9 @@ public function editUser($parameters) {
 				}
 				break;
 			case 'email':
-				if (\filter_var($parameters['_put']['value'], FILTER_VALIDATE_EMAIL)) {
-					$targetUser->setEMailAddress($parameters['_put']['value']);
+				$emailAddress = $parameters['_put']['value'];
+				if (($emailAddress === '') || \filter_var($emailAddress, FILTER_VALIDATE_EMAIL)) {
+					$targetUser->setEMailAddress($emailAddress);
 				} else {
 					return new Result(null, 102);
 				}
diff --git a/apps/provisioning_api/tests/UsersTest.php b/apps/provisioning_api/tests/UsersTest.php
index b7144dd468dd..d811cc86cdff 100644
--- a/apps/provisioning_api/tests/UsersTest.php
+++ b/apps/provisioning_api/tests/UsersTest.php
@@ -989,6 +989,31 @@ public function testEditUserRegularUserSelfEditChangeEmailValid() {
 		$this->assertEquals($expected, $this->api->editUser(['userid' => 'UserToEdit', '_put' => ['key' => 'email', 'value' => 'demo@owncloud.org']]));
 	}
 
+	public function testEditUserRegularUserSelfEditClearEmail() {
+		$loggedInUser = $this->createMock(IUser::class);
+		$loggedInUser
+			->expects($this->any())
+			->method('getUID')
+			->will($this->returnValue('UserToEdit'));
+		$targetUser = $this->createMock(IUser::class);
+		$this->userSession
+			->expects($this->once())
+			->method('getUser')
+			->will($this->returnValue($loggedInUser));
+		$this->userManager
+			->expects($this->once())
+			->method('get')
+			->with('UserToEdit')
+			->will($this->returnValue($targetUser));
+		$targetUser
+			->expects($this->once())
+			->method('setEMailAddress')
+			->with('');
+
+		$expected = new Result(null, 100);
+		$this->assertEquals($expected, $this->api->editUser(['userid' => 'UserToEdit', '_put' => ['key' => 'email', 'value' => '']]));
+	}
+
 	public function testEditUserRegularUserSelfEditChangeEmailInvalid() {
 		$loggedInUser = $this->createMock(IUser::class);
 		$loggedInUser
diff --git a/changelog/unreleased/37424-2 b/changelog/unreleased/37424-2
new file mode 100644
index 000000000000..07a950abe7de
--- /dev/null
+++ b/changelog/unreleased/37424-2
@@ -0,0 +1,8 @@
+Bugfix: Allow clearing a user email address with the Provisioning API
+
+Specifying the empty string as the email address is now valid when editing a
+user with the Provisioning API. This allows the email address of a user to be
+cleared.
+
+https://github.com/owncloud/core/issues/37424
+https://github.com/owncloud/core/pull/37427
diff --git a/tests/acceptance/features/apiProvisioning-v1/editUser.feature b/tests/acceptance/features/apiProvisioning-v1/editUser.feature
index 1bb13ab403f6..02ebca5d108b 100644
--- a/tests/acceptance/features/apiProvisioning-v1/editUser.feature
+++ b/tests/acceptance/features/apiProvisioning-v1/editUser.feature
@@ -62,6 +62,16 @@ Feature: edit users
     And the HTTP status code should be "200"
     And the email address of user "brand-new-user" should be "brand-new-user@example.com"
 
+  Scenario: the administrator can clear an existing user email
+    Given user "brand-new-user" has been created with default attributes and skeleton files
+    And the administrator has changed the email of user "brand-new-user" to "brand-new-user@gmail.com"
+    And the OCS status code should be "100"
+    And the HTTP status code should be "200"
+    When the administrator changes the email of user "brand-new-user" to "" using the provisioning API
+    Then the OCS status code should be "100"
+    And the HTTP status code should be "200"
+    And the email address of user "brand-new-user" should be ""
+
   @smokeTest
   Scenario: a subadmin should be able to edit the user information in their group
     Given these users have been created with default attributes and skeleton files:
diff --git a/tests/acceptance/features/apiProvisioning-v2/editUser.feature b/tests/acceptance/features/apiProvisioning-v2/editUser.feature
index 5a6697cecdd5..f4eb9891c910 100644
--- a/tests/acceptance/features/apiProvisioning-v2/editUser.feature
+++ b/tests/acceptance/features/apiProvisioning-v2/editUser.feature
@@ -62,6 +62,16 @@ Feature: edit users
     And the HTTP status code should be "200"
     And the email address of user "brand-new-user" should be "brand-new-user@example.com"
 
+  Scenario: the administrator can clear an existing user email
+    Given user "brand-new-user" has been created with default attributes and skeleton files
+    And the administrator has changed the email of user "brand-new-user" to "brand-new-user@gmail.com"
+    And the OCS status code should be "200"
+    And the HTTP status code should be "200"
+    When the administrator changes the email of user "brand-new-user" to "" using the provisioning API
+    Then the OCS status code should be "200"
+    And the HTTP status code should be "200"
+    And the email address of user "brand-new-user" should be ""
+
   @smokeTest
   Scenario: a subadmin should be able to edit the user information in their group
     Given these users have been created with default attributes and skeleton files: