diff --git a/lib/shared/threads/protocols/dm-thread-protocol.js b/lib/shared/threads/protocols/dm-thread-protocol.js
--- a/lib/shared/threads/protocols/dm-thread-protocol.js
+++ b/lib/shared/threads/protocols/dm-thread-protocol.js
@@ -572,6 +572,8 @@
     sidebarThreadType: thickThreadTypes.THICK_SIDEBAR,
     pendingSidebarURLPrefix: pendingThickSidebarURLPrefix,
   },
+
+  shouldPerformSideEffectsBeforeSendingMessage: false,
 });
 
 export { dmThreadProtocol };
diff --git a/lib/shared/threads/protocols/keyserver-thread-protocol.js b/lib/shared/threads/protocols/keyserver-thread-protocol.js
--- a/lib/shared/threads/protocols/keyserver-thread-protocol.js
+++ b/lib/shared/threads/protocols/keyserver-thread-protocol.js
@@ -368,6 +368,8 @@
     sidebarThreadType: thinThreadTypes.SIDEBAR,
     pendingSidebarURLPrefix: pendingSidebarURLPrefix,
   },
+
+  shouldPerformSideEffectsBeforeSendingMessage: true,
 });
 
 function mediaIDIsKeyserverID(mediaID: string): boolean {
diff --git a/lib/shared/threads/thread-spec.js b/lib/shared/threads/thread-spec.js
--- a/lib/shared/threads/thread-spec.js
+++ b/lib/shared/threads/thread-spec.js
@@ -274,6 +274,7 @@
     +sidebarThreadType: ThreadType,
     +pendingSidebarURLPrefix: string,
   },
+  +shouldPerformSideEffectsBeforeSendingMessage: boolean,
 };
 
 export type ThreadSpec = {
diff --git a/native/input/input-state-container.react.js b/native/input/input-state-container.react.js
--- a/native/input/input-state-container.react.js
+++ b/native/input/input-state-container.react.js
@@ -78,10 +78,7 @@
   type ClientMediaMissionReportCreationRequest,
   reportTypes,
 } from 'lib/types/report-types.js';
-import {
-  threadTypeIsThick,
-  type ThreadType,
-} from 'lib/types/thread-types-enum.js';
+import { type ThreadType } from 'lib/types/thread-types-enum.js';
 import {
   type ClientNewThinThreadRequest,
   type NewThreadResult,
@@ -588,7 +585,10 @@
     parentThreadInfo: ?ThreadInfo,
   ): Promise<SendMessagePayload> {
     try {
-      if (!threadTypeIsThick(threadInfo.type)) {
+      if (
+        threadSpecs[threadInfo.type].protocol
+          .shouldPerformSideEffectsBeforeSendingMessage
+      ) {
         await this.props.textMessageCreationSideEffectsFunc(
           messageInfo,
           threadInfo,
@@ -608,7 +608,10 @@
         parentThreadInfo,
         sidebarCreation,
       );
-      if (threadTypeIsThick(threadInfo.type)) {
+      if (
+        !threadSpecs[threadInfo.type].protocol
+          .shouldPerformSideEffectsBeforeSendingMessage
+      ) {
         await this.props.textMessageCreationSideEffectsFunc(
           messageInfo,
           threadInfo,
diff --git a/web/input/input-state-container.react.js b/web/input/input-state-container.react.js
--- a/web/input/input-state-container.react.js
+++ b/web/input/input-state-container.react.js
@@ -76,7 +76,6 @@
 import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
 import type { Dispatch } from 'lib/types/redux-types.js';
 import { reportTypes } from 'lib/types/report-types.js';
-import { threadTypeIsThick } from 'lib/types/thread-types-enum.js';
 import type { ThreadType } from 'lib/types/thread-types-enum.js';
 import {
   type ClientNewThinThreadRequest,
@@ -1365,7 +1364,10 @@
     parentThreadInfo: ?ThreadInfo,
   ): Promise<SendMessagePayload> {
     try {
-      if (!threadTypeIsThick(threadInfo.type)) {
+      if (
+        threadSpecs[threadInfo.type].protocol
+          .shouldPerformSideEffectsBeforeSendingMessage
+      ) {
         await this.props.textMessageCreationSideEffectsFunc(
           messageInfo,
           threadInfo,
@@ -1385,7 +1387,10 @@
         parentThreadInfo,
         sidebarCreation,
       );
-      if (threadTypeIsThick(threadInfo.type)) {
+      if (
+        !threadSpecs[threadInfo.type].protocol
+          .shouldPerformSideEffectsBeforeSendingMessage
+      ) {
         await this.props.textMessageCreationSideEffectsFunc(
           messageInfo,
           threadInfo,