diff --git a/src/components/ServerNotices.js b/src/components/ServerNotices.js
index a0f37da..2a3e8bd 100644
--- a/src/components/ServerNotices.js
+++ b/src/components/ServerNotices.js
@@ -7,8 +7,10 @@ import {
   Toolbar,
   required,
   useCreate,
+  useMutation,
   useNotify,
   useTranslate,
+  useUnselectAll,
 } from "react-admin";
 import MessageIcon from "@material-ui/icons/Message";
 import IconCancel from "@material-ui/icons/Cancel";
@@ -98,3 +100,49 @@ export const ServerNoticeButton = ({ record }) => {
     </Fragment>
   );
 };
+
+export const ServerNoticeBulkButton = ({ selectedIds }) => {
+  const [open, setOpen] = useState(false);
+  const notify = useNotify();
+  const unselectAll = useUnselectAll();
+  const [createMany, { loading }] = useMutation();
+
+  const handleDialogOpen = () => setOpen(true);
+  const handleDialogClose = () => setOpen(false);
+
+  const handleSend = values => {
+    createMany(
+      {
+        type: "createMany",
+        resource: "servernotices",
+        payload: { ids: selectedIds, data: values },
+      },
+      {
+        onSuccess: ({ data }) => {
+          notify("resources.servernotices.action.send_success");
+          unselectAll("users");
+          handleDialogClose();
+        },
+        onFailure: error =>
+          notify("resources.servernotices.action.send_failure", "error"),
+      }
+    );
+  };
+
+  return (
+    <Fragment>
+      <Button
+        label="resources.servernotices.send"
+        onClick={handleDialogOpen}
+        disabled={loading}
+      >
+        <MessageIcon />
+      </Button>
+      <ServerNoticeDialog
+        open={open}
+        onClose={handleDialogClose}
+        onSend={handleSend}
+      />
+    </Fragment>
+  );
+};
diff --git a/src/components/users.js b/src/components/users.js
index 8e6c75b..16167a0 100644
--- a/src/components/users.js
+++ b/src/components/users.js
@@ -30,7 +30,7 @@ import {
   useTranslate,
   Pagination,
 } from "react-admin";
-import { ServerNoticeButton } from "./ServerNotices";
+import { ServerNoticeButton, ServerNoticeBulkButton } from "./ServerNotices";
 
 const UserPagination = props => (
   <Pagination {...props} rowsPerPageOptions={[10, 25, 50, 100, 500, 1000]} />
@@ -51,6 +51,7 @@ const UserBulkActionButtons = props => {
   const translate = useTranslate();
   return (
     <Fragment>
+      <ServerNoticeBulkButton {...props} />
       <BulkDeleteButton
         {...props}
         label="resources.users.action.erase"
diff --git a/src/synapse/dataProvider.js b/src/synapse/dataProvider.js
index 859dc73..6d5486c 100644
--- a/src/synapse/dataProvider.js
+++ b/src/synapse/dataProvider.js
@@ -221,6 +221,29 @@ const dataProvider = {
     }));
   },
 
+  createMany: (resource, params) => {
+    console.log("createMany " + resource);
+    const homeserver = localStorage.getItem("base_url");
+    if (!homeserver || !(resource in resourceMap)) return Promise.reject();
+
+    const res = resourceMap[resource];
+    if (!("create" in res)) return Promise.reject();
+
+    return Promise.all(
+      params.ids.map(id => {
+        params.data.id = id;
+        const cre = res["create"](params.data);
+        const endpoint_url = homeserver + cre.endpoint;
+        return jsonClient(endpoint_url, {
+          method: cre.method,
+          body: JSON.stringify(cre.body, filterNullValues),
+        });
+      })
+    ).then(responses => ({
+      data: responses.map(({ json }) => json),
+    }));
+  },
+
   delete: (resource, params) => {
     console.log("delete " + resource);
     const homeserver = localStorage.getItem("base_url");