diff --git a/keyserver/src/push/send.js b/keyserver/src/push/send.js
--- a/keyserver/src/push/send.js
+++ b/keyserver/src/push/send.js
@@ -131,10 +131,16 @@
         const rawThreadInfo = rawThreadInfoFromServerThreadInfo(
           serverThreadInfo,
           userID,
+          { minimallyEncodePermissions: true },
         );
         if (!rawThreadInfo) {
           return null;
         }
+        invariant(
+          rawThreadInfo.minimallyEncoded,
+          'rawThreadInfo from rawThreadInfoFromServerThreadInfo must be ' +
+            'minimallyEncoded when minimallyEncodePermissions option is set',
+        );
         return threadInfoFromRawThreadInfo(rawThreadInfo, userID, userInfos);
       }),
       _pickBy(threadInfo => threadInfo),
diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -58,14 +58,17 @@
   type RobotextMessageInfo,
 } from '../types/message-types.js';
 import type {
+  MinimallyEncodedRoleInfo,
   MinimallyEncodedThreadCurrentUserInfo,
   RawThreadInfo,
   ThreadInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import {
   decodeMinimallyEncodedRoleInfo,
+  minimallyEncodeMemberInfo,
   minimallyEncodeRawThreadInfo,
-  minimallyEncodeThreadInfo,
+  minimallyEncodeRoleInfo,
+  minimallyEncodeThreadCurrentUserInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import { userRelationshipStatus } from '../types/relationship-types.js';
 import {
@@ -75,6 +78,7 @@
   threadPermissionPropagationPrefixes,
   threadPermissions,
   type ThreadPermissionsInfo,
+  type ThreadRolePermissionsBlob,
   type UserSurfacedPermission,
 } from '../types/thread-permission-types.js';
 import {
@@ -87,7 +91,6 @@
   ChangeThreadSettingsPayload,
   ClientNewThreadRequest,
   LegacyRawThreadInfo,
-  LegacyThreadInfo,
   MemberInfo,
   MixedRawThreadInfos,
   NewThreadResult,
@@ -350,7 +353,7 @@
   const memberIDs = members.map(member => member.id);
   const threadID = getPendingThreadID(threadType, memberIDs, sourceMessageID);
 
-  const permissions = {
+  const permissions: ThreadRolePermissionsBlob = {
     [threadPermissions.KNOW_OF]: true,
     [threadPermissions.VISIBLE]: true,
     [threadPermissions.VOICED]: true,
@@ -360,14 +363,15 @@
     makePermissionsBlob(permissions, null, threadID, threadType),
     threadID,
   );
-  const role = {
+  const role: MinimallyEncodedRoleInfo = minimallyEncodeRoleInfo({
     id: `${threadID}/role`,
     name: 'Members',
     permissions,
     isDefault: true,
-  };
+  });
 
-  const rawThreadInfo = {
+  const rawThreadInfo: RawThreadInfo = {
+    minimallyEncoded: true,
     id: threadID,
     type: threadType,
     name: name ?? null,
@@ -377,16 +381,18 @@
     parentThreadID: parentThreadInfo?.id ?? null,
     containingThreadID: getContainingThreadID(parentThreadInfo, threadType),
     community: getCommunity(parentThreadInfo),
-    members: members.map(member => ({
-      id: member.id,
-      role: role.id,
-      permissions: membershipPermissions,
-      isSender: false,
-    })),
+    members: members.map(member =>
+      minimallyEncodeMemberInfo({
+        id: member.id,
+        role: role.id,
+        permissions: membershipPermissions,
+        isSender: false,
+      }),
+    ),
     roles: {
       [role.id]: role,
     },
-    currentUser: {
+    currentUser: minimallyEncodeThreadCurrentUserInfo({
       role: role.id,
       permissions: membershipPermissions,
       subscription: {
@@ -394,7 +400,7 @@
         home: false,
       },
       unread: false,
-    },
+    }),
     repliesCount: 0,
     sourceMessageID,
     pinnedCount: 0,
@@ -892,52 +898,31 @@
 }
 
 function threadInfoFromRawThreadInfo(
-  rawThreadInfo: LegacyRawThreadInfo | RawThreadInfo,
+  rawThreadInfo: RawThreadInfo,
   viewerID: ?string,
   userInfos: UserInfos,
 ): ThreadInfo {
-  let threadInfo: LegacyThreadInfo | ThreadInfo;
-  if (rawThreadInfo.minimallyEncoded) {
-    threadInfo = {
-      minimallyEncoded: true,
-      id: rawThreadInfo.id,
-      type: rawThreadInfo.type,
-      name: rawThreadInfo.name,
-      uiName: '',
-      description: rawThreadInfo.description,
-      color: rawThreadInfo.color,
-      creationTime: rawThreadInfo.creationTime,
-      parentThreadID: rawThreadInfo.parentThreadID,
-      containingThreadID: rawThreadInfo.containingThreadID,
-      community: rawThreadInfo.community,
-      members: getRelativeMemberInfos(rawThreadInfo, viewerID, userInfos),
-      roles: rawThreadInfo.roles,
-      currentUser: getMinimallyEncodedCurrentUser(
-        rawThreadInfo,
-        viewerID,
-        userInfos,
-      ),
-      repliesCount: rawThreadInfo.repliesCount,
-    };
-  } else {
-    threadInfo = {
-      id: rawThreadInfo.id,
-      type: rawThreadInfo.type,
-      name: rawThreadInfo.name,
-      uiName: '',
-      description: rawThreadInfo.description,
-      color: rawThreadInfo.color,
-      creationTime: rawThreadInfo.creationTime,
-      parentThreadID: rawThreadInfo.parentThreadID,
-      containingThreadID: rawThreadInfo.containingThreadID,
-      community: rawThreadInfo.community,
-      members: getRelativeMemberInfos(rawThreadInfo, viewerID, userInfos),
-      roles: rawThreadInfo.roles,
-      currentUser: getCurrentUser(rawThreadInfo, viewerID, userInfos),
-      repliesCount: rawThreadInfo.repliesCount,
-    };
-    threadInfo = minimallyEncodeThreadInfo(threadInfo);
-  }
+  let threadInfo: ThreadInfo = {
+    minimallyEncoded: true,
+    id: rawThreadInfo.id,
+    type: rawThreadInfo.type,
+    name: rawThreadInfo.name,
+    uiName: '',
+    description: rawThreadInfo.description,
+    color: rawThreadInfo.color,
+    creationTime: rawThreadInfo.creationTime,
+    parentThreadID: rawThreadInfo.parentThreadID,
+    containingThreadID: rawThreadInfo.containingThreadID,
+    community: rawThreadInfo.community,
+    members: getRelativeMemberInfos(rawThreadInfo, viewerID, userInfos),
+    roles: rawThreadInfo.roles,
+    currentUser: getMinimallyEncodedCurrentUser(
+      rawThreadInfo,
+      viewerID,
+      userInfos,
+    ),
+    repliesCount: rawThreadInfo.repliesCount,
+  };
 
   threadInfo = {
     ...threadInfo,