diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index e43c199962..666c7ba01c 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -2141,7 +2141,15 @@
             "select_messages_to_retry": "You can select all or individual messages to retry or delete",
             "server_connectivity_lost_description": "Sent messages will be stored until your connection has returned.",
             "server_connectivity_lost_title": "Connectivity to the server has been lost.",
-            "some_messages_not_sent": "Some of your messages have not been sent"
+            "some_messages_not_sent": "Some of your messages have not been sent",
+            "message_rejected": {
+                "title": "Message rejected: %(harm)s",
+                "can_retry_in": {
+                    "one": "You may attempt to send new messages in 1 second.",
+                    "other": "You may attempt to send new messages in %(count)s seconds."
+                },
+                "cannot_retry": "You are not allowed to retry this message"
+            }
         },
         "unknown_status_code_for_timeline_jump": "unknown status code",
         "unread_notifications_predecessor": {
@@ -4264,5 +4272,29 @@
             "userInputs": "There should not be any personal or page related data.",
             "wordByItself": "A word by itself is easy to guess"
         }
+    },
+    "safety": {
+        "harms": {
+            "generic": "The message was blocked due to harmful content",
+            "multiple": "This message was blocked due to multiple harms",
+            "spam": "The message is considered spam.",
+            "spam.fraud": "The message contains fraudulent content",
+            "spam.impersonation": "The message is attempting to impersonate someone",
+            "spam.election_interference": "The message contains election interference content",
+            "spam.flooding": "You are sending too many messages",
+            "adult": "The message contains adult content",
+            "harassment": "Message detected as containing harassment.",
+            "harassment.trolling": "The message is contains trolling content.",
+            "harassment.targeted": "The message contains targeted harassment.",
+            "harassment.hate": "The message contains hateful content.",
+            "harassment.doxxing": "The message contains doxxing content.",
+            "violence": "The message contains violent content.",
+            "child_safety": "The message has contains child safety risks.",
+            "danger": "The message contains potentially dangerous content.",
+            "tos": "The message is against the terms of service.",
+            "tos.hacking": "The message is against the terms of service (hacking).",
+            "tos.prohibited": "The message is against the terms of service (prohibited content).",
+            "tos.ban_evasion": "The message is against the terms of service (ban evasion detected)."
+        }
     }
 }
diff --git a/src/viewmodels/room/RoomStatusBar.ts b/src/viewmodels/room/RoomStatusBar.ts
index e93fa8c7e5..939a69c109 100644
--- a/src/viewmodels/room/RoomStatusBar.ts
+++ b/src/viewmodels/room/RoomStatusBar.ts
@@ -19,6 +19,7 @@ import {
     type MatrixError,
     RoomEvent,
     EventStatus,
+    MatrixSafetyError,
 } from "matrix-js-sdk/src/matrix";
 
 import { MatrixClientPeg } from "../../MatrixClientPeg";
@@ -50,6 +51,7 @@ export class RoomStatusBarViewModel
     private static readonly determineStateForUnreadMessages = (
         room: Room,
         hasClickedTermsAndConditions: boolean,
+        isResending: boolean,
     ): RoomStatusBarViewSnapshot => {
         const unsentMessages = room.getPendingEvents().filter((ev) => ev.status === EventStatus.NOT_SENT);
         if (unsentMessages.length === 0) {
@@ -61,10 +63,11 @@ export class RoomStatusBarViewModel
             // The user has just clicked (and we assume accepted) the terms and contitions, so show them the retry buttons
             return {
                 state: RoomStatusBarState.UnsentMessages,
-                isResending: false,
+                isResending,
             };
         }
         let resourceLimitError: MatrixError | null = null;
+        let safetyError: MatrixSafetyError | null = null;
         for (const m of unsentMessages) {
             if (m.error) {
                 if (m.error.errcode === "M_CONSENT_NOT_GIVEN") {
@@ -77,6 +80,9 @@ export class RoomStatusBarViewModel
                 if (m.error.errcode === "M_RESOURCE_LIMIT_EXCEEDED") {
                     resourceLimitError = m.error;
                 }
+                if (m.error instanceof MatrixSafetyError) {
+                    safetyError = m.error;
+                }
             }
         }
         if (resourceLimitError) {
@@ -86,6 +92,15 @@ export class RoomStatusBarViewModel
                 adminContactHref: resourceLimitError.data.admin_contact,
             };
         }
+        if (safetyError) {
+            return {
+                state: RoomStatusBarState.MessageRejected,
+                harms: [...safetyError.harms],
+                serverError: safetyError.error,
+                isResending,
+                canRetryInSeconds: safetyError.expiry && Math.ceil((safetyError.expiry.getTime() - Date.now()) / 1000),
+            };
+        }
         return {
             state: RoomStatusBarState.UnsentMessages,
             isResending: false,
@@ -107,12 +122,6 @@ export class RoomStatusBarViewModel
         }
 
         // If we're in the process of resending, don't flicker.
-        if (isResending) {
-            return {
-                state: RoomStatusBarState.UnsentMessages,
-                isResending,
-            };
-        }
         const syncState = client.getSyncState();
 
         // Highest priority.
@@ -134,10 +143,11 @@ export class RoomStatusBarViewModel
         }
 
         // Then check messages.
-        return this.determineStateForUnreadMessages(room, hasClickedTermsAndConditions);
+        return this.determineStateForUnreadMessages(room, hasClickedTermsAndConditions, isResending);
     };
 
     private readonly client: MatrixClient;
+    private timeout?: ReturnType<typeof globalThis.setTimeout>;
 
     public constructor(props: Props) {
         const client = MatrixClientPeg.safeGet();
@@ -159,6 +169,10 @@ export class RoomStatusBarViewModel
     private hasClickedTermsAndConditions = false;
 
     private setSnapshot(): void {
+        if (this.timeout) {
+            // If we had a timer going, clear it.
+            clearTimeout(this.timeout);
+        }
         this.snapshot.set(
             RoomStatusBarViewModel.computeSnapshot(
                 this.props.room,
@@ -171,6 +185,12 @@ export class RoomStatusBarViewModel
         if (this.hasClickedTermsAndConditions && !this.snapshot.current.state) {
             this.hasClickedTermsAndConditions = false;
         }
+        if (
+            this.snapshot.current.state === RoomStatusBarState.MessageRejected &&
+            this.snapshot.current.canRetryInSeconds
+        ) {
+            this.timeout = setTimeout(() => this.setSnapshot, this.snapshot.current.canRetryInSeconds * 1000);
+        }
     }
 
     public dispose(): void {