diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6e7a487..e1dc1f7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -89,8 +89,10 @@ jobs:
           }
           "rid=$rid" | Out-File -FilePath $env:GITHUB_OUTPUT -Append
           $ErrorActionPreference = 'Stop'
-          Write-Host "Packing WhatsBox pointer + WhatsBox.$rid into bin/ before WhatsDemo restore"
+          Write-Host "Packing Inbox + WhatsBox pointer + WhatsBox.$rid into bin/ before WhatsDemo restore"
           # GeneratePackageOnBuild=true makes `dotnet pack` skip Build (NU5026: WhatsBox.dll missing).
+          dotnet pack src/Inbox/Inbox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:inbox-pack.binlog
+          if ($LASTEXITCODE -ne 0) { throw "Inbox pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:pointer-pack.binlog
           if ($LASTEXITCODE -ne 0) { throw "WhatsBox pointer pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -r $rid -p:GeneratePackageOnBuild=false -bl:"pack-$rid.binlog"
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 3ae4cf2..750cb49 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -55,6 +55,8 @@ jobs:
       - name: 📦 pack
         run: |
           $ErrorActionPreference = 'Stop'
+          dotnet pack src/Inbox/Inbox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:"inbox-pack.binlog"
+          if ($LASTEXITCODE -ne 0) { throw "Inbox pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:"pointer-pack.binlog"
           if ($LASTEXITCODE -ne 0) { throw "WhatsBox pointer pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -r ${{ matrix.rid }} -p:GeneratePackageOnBuild=false -bl:"pack-${{ matrix.rid }}.binlog"
@@ -115,7 +117,9 @@ jobs:
           }
           $rid = "$os-$cpu"
           $ErrorActionPreference = 'Stop'
-          Write-Host "Packing WhatsBox pointer + WhatsBox.$rid into bin/ before WhatsDemo restore"
+          Write-Host "Packing Inbox + WhatsBox pointer + WhatsBox.$rid into bin/ before WhatsDemo restore"
+          dotnet pack src/Inbox/Inbox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:inbox-pack.binlog
+          if ($LASTEXITCODE -ne 0) { throw "Inbox pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:pointer-pack.binlog
           if ($LASTEXITCODE -ne 0) { throw "WhatsBox pointer pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -r $rid -p:GeneratePackageOnBuild=false -bl:"pack-$rid.binlog"
@@ -130,6 +134,8 @@ jobs:
       - name: 📦 pointer
         run: |
           $ErrorActionPreference = 'Stop'
+          dotnet pack src/Inbox/Inbox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:inbox-pack.binlog
+          if ($LASTEXITCODE -ne 0) { throw "Inbox pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsBox/WhatsBox.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:pointer-pack.binlog
           if ($LASTEXITCODE -ne 0) { throw "WhatsBox pointer pack failed with exit code $LASTEXITCODE." }
           dotnet pack src/WhatsDemo/WhatsDemo.csproj -c $env:Configuration -p:GeneratePackageOnBuild=false -bl:pointer-pack-wd.binlog
@@ -140,6 +146,7 @@ jobs:
         with:
           name: package-pointer
           path: |
+            bin/Inbox.*.nupkg
             bin/WhatsBox.*.nupkg
             bin/wd.*.nupkg
           retention-days: 30
diff --git a/readme.md b/readme.md
index 25be1a9..ee487c6 100644
--- a/readme.md
+++ b/readme.md
@@ -57,7 +57,11 @@ Target framework: `net10.0`. The managed surface is AOT-compatible (source-gener
 You only reference `WhatsBox`. Restore and `dotnet publish -r <rid>` pull the
 matching `WhatsBox.{rid}` package automatically. The sidecar lands next to the
 app (`AppContext.BaseDirectory`); `WhatsBoxClient` starts it from there — never
-from the current working directory.
+from the current working directory. The pointer package depends on [`Inbox`](https://www.nuget.org/packages/Inbox)
+(`InboxClient`); Inbox's RID packing targets are **not** transitive.
+
+Adapters for other products PackageReference `Inbox` directly (or ProjectReference
+it and import `Inbox.targets`) so pointer + `dotnet pack -r` packaging is shared.
 
 ```bash
 dotnet add package WhatsBox
diff --git a/src/Inbox/Inbox.csproj b/src/Inbox/Inbox.csproj
index 41069a5..2f6cfaf 100644
--- a/src/Inbox/Inbox.csproj
+++ b/src/Inbox/Inbox.csproj
@@ -1,13 +1,29 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
+    <PackageId>Inbox</PackageId>
     <RootNamespace>Inbox</RootNamespace>
     <AssemblyName>Inbox</AssemblyName>
-    <Description>Managed reference client for an Inbox Protocol-implementation CLI (JSON-RPC 2.0, NDJSON over stdio).</Description>
+    <Description>Managed reference client for an Inbox Protocol-implementation CLI (JSON-RPC 2.0, NDJSON over stdio), plus RID packing targets for native adapters.</Description>
     <IsAotCompatible>true</IsAotCompatible>
-    <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
     <InternalsVisibleTo Include="Tests" />
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="JsonPeek" Version="1.3.0" PrivateAssets="all" GeneratePathProperty="true" />
+    <PackageReference Include="JsonPoke" Version="1.3.0" PrivateAssets="all" GeneratePathProperty="true" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Update="build\Inbox.targets" Pack="true" PackagePath="build\Inbox.targets" />
+  </ItemGroup>
+  <Target Name="PackInboxBuildTasks" BeforeTargets="_GetPackageFiles;GenerateNuspec">
+    <Error Condition="!Exists('$(PkgJsonPoke)\build\JsonPoke.dll')" Text="JsonPoke was not restored; cannot pack Inbox.targets task assemblies." />
+    <Error Condition="!Exists('$(PkgJsonPeek)\build\JsonPeek.dll')" Text="JsonPeek was not restored; cannot pack Inbox.targets task assemblies." />
+    <ItemGroup>
+      <None Include="$(PkgJsonPoke)\build\JsonPoke.dll" Pack="true" PackagePath="build\" Visible="false" />
+      <None Include="$(PkgJsonPoke)\build\Newtonsoft.Json.dll" Pack="true" PackagePath="build\" Visible="false" />
+      <None Include="$(PkgJsonPeek)\build\JsonPeek.dll" Pack="true" PackagePath="build\" Visible="false" />
+    </ItemGroup>
+  </Target>
 </Project>
diff --git a/src/Inbox/build/Inbox.targets b/src/Inbox/build/Inbox.targets
new file mode 100644
index 0000000..7311c6c
--- /dev/null
+++ b/src/Inbox/build/Inbox.targets
@@ -0,0 +1,81 @@
+<Project>
+  <!--
+    Auto-imported from the Inbox nupkg via build/Inbox.targets (not buildTransitive).
+    Adapters that ProjectReference Inbox must Import this file themselves.
+    Pointer + RID native packing applies only when the adapter sets RuntimeIdentifiers.
+    Without that, this is just InboxClient — no runtime.json, no PackageId suffix.
+  -->
+  <PropertyGroup>
+    <InboxTargetsImported>true</InboxTargetsImported>
+    <InboxPackageId Condition="'$(InboxPackageId)' == ''">$(PackageId)</InboxPackageId>
+  </PropertyGroup>
+
+  <!-- Pointer + RID pack split is opt-in: the adapter must declare RuntimeIdentifiers. -->
+  <PropertyGroup Condition="'$(RuntimeIdentifiers)' != ''">
+    <NoWarn>$(NoWarn);NU5128</NoWarn>
+    <IncludeBuildOutput Condition="'$(RuntimeIdentifier)' == ''">true</IncludeBuildOutput>
+    <IncludeBuildOutput Condition="'$(RuntimeIdentifier)' != ''">false</IncludeBuildOutput>
+    <SuppressDependenciesWhenPacking Condition="'$(RuntimeIdentifier)' != ''">true</SuppressDependenciesWhenPacking>
+    <PackageId Condition="'$(RuntimeIdentifier)' != ''">$(InboxPackageId).$(RuntimeIdentifier)</PackageId>
+    <TargetsForTfmSpecificContentInPackage>$(TargetsForTfmSpecificContentInPackage);PackInboxNativeBinary</TargetsForTfmSpecificContentInPackage>
+  </PropertyGroup>
+
+  <!-- Nupkg layout: task assemblies sit next to this file. P2P imports rely on a JsonPoke/JsonPeek PackageReference in the adapter. -->
+  <UsingTask TaskName="JsonPoke" AssemblyFile="$(MSBuildThisFileDirectory)JsonPoke.dll" Condition="Exists('$(MSBuildThisFileDirectory)JsonPoke.dll')" />
+  <UsingTask TaskName="JsonPeek" AssemblyFile="$(MSBuildThisFileDirectory)JsonPeek.dll" Condition="Exists('$(MSBuildThisFileDirectory)JsonPeek.dll')" />
+
+  <Target Name="WriteInboxRuntimeJson"
+          BeforeTargets="_GetPackageFiles;GenerateNuspec"
+          Condition="'$(RuntimeIdentifiers)' != '' and '$(RuntimeIdentifier)' == ''">
+    <PropertyGroup>
+      <_InboxRuntimeJson>$([System.IO.Path]::GetFullPath('$(IntermediateOutputPath)runtime.json'))</_InboxRuntimeJson>
+    </PropertyGroup>
+    <ItemGroup>
+      <_InboxRid Include="$(RuntimeIdentifiers)" />
+    </ItemGroup>
+    <Error Condition="'@(_InboxRid)' == ''" Text="Inbox pointer pack requires RuntimeIdentifiers so runtime.json can map RID packages." />
+    <MakeDir Directories="$([System.IO.Path]::GetDirectoryName($(_InboxRuntimeJson)))" />
+    <WriteLinesToFile File="$(_InboxRuntimeJson)" Lines="{&quot;runtimes&quot;:{}}" Overwrite="true" />
+    <JsonPoke
+      ContentPath="$(_InboxRuntimeJson)"
+      Query="$.runtimes['%(_InboxRid.Identity)'].$(InboxPackageId)['$(InboxPackageId).%(_InboxRid.Identity)']"
+      Value="'[$(Version), )'" />
+    <JsonPeek ContentPath="$(_InboxRuntimeJson)" Query="$.runtimes">
+      <Output TaskParameter="Result" ItemName="_InboxWrittenRuntimes" />
+    </JsonPeek>
+    <Error
+      Condition="'@(_InboxWrittenRuntimes)' == ''"
+      Text="runtime.json has no runtimes after writing RIDs from RuntimeIdentifiers." />
+    <ItemGroup>
+      <None Include="$(_InboxRuntimeJson)" Pack="true" PackagePath="runtime.json" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="IncludeInboxNative"
+          AfterTargets="$(InboxIncludeNativeAfterTargets)"
+          BeforeTargets="GetCopyToOutputDirectoryItems;AssignTargetPaths"
+          Condition="'$(RuntimeIdentifiers)' != '' and '$(RuntimeIdentifier)' == '' and '$(InboxNativeBinary)' != ''">
+    <PropertyGroup>
+      <_InboxNativeTargetPath Condition="'$(InboxNativeName)' != ''">$(InboxNativeName)</_InboxNativeTargetPath>
+      <_InboxNativeTargetPath Condition="'$(_InboxNativeTargetPath)' == ''">$([System.IO.Path]::GetFileName($(InboxNativeBinary)))</_InboxNativeTargetPath>
+    </PropertyGroup>
+    <ItemGroup>
+      <ContentWithTargetPath Include="$(InboxNativeBinary)" Condition="Exists('$(InboxNativeBinary)')">
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
+        <TargetPath>$(_InboxNativeTargetPath)</TargetPath>
+        <Visible>false</Visible>
+        <Pack>false</Pack>
+      </ContentWithTargetPath>
+    </ItemGroup>
+  </Target>
+
+  <Target Name="PackInboxNativeBinary" DependsOnTargets="$(InboxPackNativeDependsOn)" Condition="'$(RuntimeIdentifiers)' != '' and '$(RuntimeIdentifier)' != ''" Returns="@(TfmSpecificPackageFile)">
+    <Error Condition="'$(InboxNativeBinary)' == '' or !Exists('$(InboxNativeBinary)')" Text="Inbox RID pack requires InboxNativeBinary so the RID package can expose runtimes/$(RuntimeIdentifier)/native/." />
+    <ItemGroup>
+      <TfmSpecificPackageFile Include="$(InboxNativeBinary)">
+        <PackagePath>runtimes/$(RuntimeIdentifier)/native/</PackagePath>
+      </TfmSpecificPackageFile>
+    </ItemGroup>
+  </Target>
+</Project>
diff --git a/src/Inbox/readme.md b/src/Inbox/readme.md
new file mode 100644
index 0000000..624e9a5
--- /dev/null
+++ b/src/Inbox/readme.md
@@ -0,0 +1,28 @@
+The [`Inbox`](https://www.nuget.org/packages/Inbox) package is the managed
+**Inbox Protocol** client (`InboxClient`) plus non-transitive MSBuild targets
+for adapters that ship a native sidecar.
+
+```xml
+<PackageReference Include="Inbox" Version="*" />
+```
+
+Apps that only want WhatsApp should PackageReference `WhatsBox` instead — these
+targets are **not** transitive.
+
+## Adapter packing
+
+`Inbox.targets` is imported only by a **direct** reference (nupkg `build/`, not
+`buildTransitive/`). In this repo, `WhatsBox` ProjectReferences Inbox and
+imports the file by hand.
+
+Pointer + RID packing is **opt-in**. Declare `RuntimeIdentifiers` on the adapter
+(and set `InboxNativeBinary`). Without that property, Inbox packs as a plain
+managed library — no `runtime.json`, no `PackageId` suffix, no native RID assets.
+
+The adapter:
+
+1. Sets `RuntimeIdentifiers` and builds its native binary (`InboxNativeBinary`,
+   optionally `InboxNativeName`, `InboxPackNativeDependsOn`,
+   `InboxIncludeNativeAfterTargets`).
+2. Packs the pointer: `dotnet pack` → adapter DLL + `runtime.json`.
+3. Packs each RID: `dotnet pack -r {rid}` → `runtimes/{rid}/native/` only.
diff --git a/src/Tests/WhatsBoxPackTests.cs b/src/Tests/WhatsBoxPackTests.cs
index a8324e8..d7ffd6e 100644
--- a/src/Tests/WhatsBoxPackTests.cs
+++ b/src/Tests/WhatsBoxPackTests.cs
@@ -39,7 +39,7 @@ public void ResolveBinaryPath_finds_project_reference_native_and_version_runs()
     }
 
     [Fact]
-    public void WriteWhatsBoxRuntimeJson_maps_six_rids_to_rid_packages()
+    public void WriteInboxRuntimeJson_maps_six_rids_to_rid_packages()
     {
         var repo = FindRepoRoot();
         var project = Path.Combine(repo, "src", "WhatsBox", "WhatsBox.csproj");
@@ -61,7 +61,7 @@ public void WriteWhatsBoxRuntimeJson_maps_six_rids_to_rid_packages()
         start.ArgumentList.Add("msbuild");
         start.ArgumentList.Add(project);
         start.ArgumentList.Add("-restore");
-        start.ArgumentList.Add("-t:WriteWhatsBoxRuntimeJson");
+        start.ArgumentList.Add("-t:WriteInboxRuntimeJson");
         start.ArgumentList.Add("-p:Configuration=" + configuration);
         start.ArgumentList.Add("-p:DesignTimeBuild=true");
         start.ArgumentList.Add("-p:GeneratePackageOnBuild=false");
@@ -98,22 +98,46 @@ public void Pointer_and_rid_csproj_use_calc_pack_split()
         var slnx = File.ReadAllText(Path.Combine(repo, "WhatsBox.slnx"));
         Assert.Contains("src/Inbox/Inbox.csproj", slnx);
         var inbox = File.ReadAllText(Path.Combine(repo, "src", "Inbox", "Inbox.csproj"));
+        Assert.Contains("<PackageId>Inbox</PackageId>", inbox);
         Assert.Contains("<AssemblyName>Inbox</AssemblyName>", inbox);
         Assert.Contains("<RootNamespace>Inbox</RootNamespace>", inbox);
+        Assert.Contains(@"PackagePath=""build\Inbox.targets""", inbox);
+        Assert.Contains(@"<None Update=""build\Inbox.targets""", inbox);
+        Assert.DoesNotContain("<Import ", inbox);
+        Assert.DoesNotContain("buildTransitive", inbox, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("<IsPackable>false</IsPackable>", inbox);
         Assert.DoesNotContain("whatsbox.exe", inbox, StringComparison.OrdinalIgnoreCase);
+
+        var targets = File.ReadAllText(Path.Combine(repo, "src", "Inbox", "build", "Inbox.targets"));
+        Assert.Contains("<InboxTargetsImported>true</InboxTargetsImported>", targets);
+        Assert.Contains("buildTransitive", targets);
+        Assert.Contains("Condition=\"'$(RuntimeIdentifiers)' != ''\"", targets);
+        Assert.Contains("$(InboxPackageId).$(RuntimeIdentifier)", targets);
+        Assert.Contains("WriteInboxRuntimeJson", targets);
+        Assert.Contains("PackInboxNativeBinary", targets);
+        Assert.DoesNotContain("go build", targets, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("whatsbox.exe", targets, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("<RuntimeIdentifiers Condition=", targets);
+        Assert.DoesNotContain("win-x64;win-arm64;linux-x64;linux-arm64;osx-x64;osx-arm64", targets);
+
         var csproj = File.ReadAllText(Path.Combine(repo, "src", "WhatsBox", "WhatsBox.csproj"));
         Assert.Contains("<PackageId>WhatsBox</PackageId>", csproj);
         Assert.Contains(@"..\Inbox\Inbox.csproj", csproj);
-        Assert.Contains("WhatsBox.$(RuntimeIdentifier)", csproj);
-        Assert.Contains("<IncludeBuildOutput Condition=\"'$(RuntimeIdentifier)' == ''\">true</IncludeBuildOutput>", csproj);
-        Assert.Contains("<IncludeBuildOutput Condition=\"'$(RuntimeIdentifier)' != ''\">false</IncludeBuildOutput>", csproj);
+        Assert.Contains(@"..\Inbox\build\Inbox.targets", csproj);
+        Assert.Contains("<RuntimeIdentifiers>win-x64;win-arm64;linux-x64;linux-arm64;osx-x64;osx-arm64</RuntimeIdentifiers>", csproj);
+        Assert.DoesNotContain("PrivateAssets=\"all\"", csproj.Substring(csproj.IndexOf(@"..\Inbox\Inbox.csproj", StringComparison.Ordinal)));
+        Assert.DoesNotContain("WhatsBox.$(RuntimeIdentifier)", csproj);
+        Assert.DoesNotContain("IncludeBuildOutput", csproj);
+        Assert.DoesNotContain("WriteWhatsBoxRuntimeJson", csproj);
+        Assert.DoesNotContain("PackWhatsBoxNativeBinary", csproj);
+        Assert.DoesNotContain("PackInboxReferenceOutput", csproj);
         Assert.DoesNotContain("<PackAsTool", csproj);
+        Assert.Contains("InboxNativeBinary", csproj);
+        Assert.Contains("BuildWhatsBoxRidNative", csproj);
         foreach (var rid in SupportedRids)
             Assert.Contains(rid, csproj);
 
-        var template = File.ReadAllText(Path.Combine(repo, "src", "WhatsBox", "runtime.json"));
-        using var doc = JsonDocument.Parse(template);
-        Assert.True(doc.RootElement.TryGetProperty("runtimes", out _));
+        Assert.False(File.Exists(Path.Combine(repo, "src", "WhatsBox", "runtime.json")));
     }
 
     [Fact]
@@ -150,7 +174,10 @@ public void Workflows_have_os_matrix_rid_pack_and_pointer_collect()
 
         var build = File.ReadAllText(Path.Combine(repo, ".github", "workflows", "build.yml"));
         Assert.Contains("os-matrix.json", build);
+        Assert.Contains("dotnet pack src/Inbox/Inbox.csproj", build);
         Assert.Contains("dotnet pack src/WhatsBox/WhatsBox.csproj", build);
+        Assert.True(build.IndexOf("dotnet pack src/Inbox/Inbox.csproj", StringComparison.Ordinal) <
+            build.IndexOf("dotnet pack src/WhatsBox/WhatsBox.csproj", StringComparison.Ordinal));
         Assert.Contains("dotnet pack src/WhatsDemo/WhatsDemo.csproj", build);
         Assert.Contains("name: package-${{ steps.rid.outputs.rid }}", build);
 
@@ -166,7 +193,10 @@ public void Workflows_have_os_matrix_rid_pack_and_pointer_collect()
         Assert.Contains("macos-15-intel", publish);
         Assert.Contains("name: package-${{ matrix.rid }}", publish);
         Assert.Contains("pattern: package-*", publish);
+        Assert.Contains("dotnet pack src/Inbox/Inbox.csproj", publish);
         Assert.Contains("dotnet pack src/WhatsBox/WhatsBox.csproj", publish);
+        Assert.True(publish.IndexOf("dotnet pack src/Inbox/Inbox.csproj", StringComparison.Ordinal) <
+            publish.IndexOf("dotnet pack src/WhatsBox/WhatsBox.csproj", StringComparison.Ordinal));
         Assert.Contains("dotnet pack src/WhatsDemo/WhatsDemo.csproj", publish);
         Assert.DoesNotContain("<PackAsTool", File.ReadAllText(Path.Combine(repo, "src", "WhatsBox", "WhatsBox.csproj")));
         Assert.Matches(new Regex(@"pointerPackages"), publish);
diff --git a/src/WhatsBox/WhatsBox.csproj b/src/WhatsBox/WhatsBox.csproj
index 4f3a699..30b1692 100644
--- a/src/WhatsBox/WhatsBox.csproj
+++ b/src/WhatsBox/WhatsBox.csproj
@@ -1,32 +1,26 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
     <PackageId>WhatsBox</PackageId>
-    <PackageId Condition="'$(RuntimeIdentifier)' != ''">WhatsBox.$(RuntimeIdentifier)</PackageId>
     <RootNamespace>WhatsBox</RootNamespace>
     <AssemblyName>WhatsBox</AssemblyName>
     <Description>WhatsApp Inbox Protocol host: PackageReference WhatsBox and publish for your RID to get the native whatsbox sidecar plus the managed Inbox client.</Description>
     <IsAotCompatible>true</IsAotCompatible>
     <RuntimeIdentifiers>win-x64;win-arm64;linux-x64;linux-arm64;osx-x64;osx-arm64</RuntimeIdentifiers>
     <IsPackable>true</IsPackable>
-    <IncludeBuildOutput Condition="'$(RuntimeIdentifier)' == ''">true</IncludeBuildOutput>
-    <IncludeBuildOutput Condition="'$(RuntimeIdentifier)' != ''">false</IncludeBuildOutput>
-    <SuppressDependenciesWhenPacking Condition="'$(RuntimeIdentifier)' != ''">true</SuppressDependenciesWhenPacking>
-    <NoWarn>$(NoWarn);NU5128</NoWarn>
-    <NativeWhatsBoxName Condition="$([MSBuild]::IsOSPlatform('Windows'))">whatsbox.exe</NativeWhatsBoxName>
-    <NativeWhatsBoxName Condition="'$(NativeWhatsBoxName)' == ''">whatsbox</NativeWhatsBoxName>
+    <InboxNativeName>whatsbox</InboxNativeName>
+    <InboxNativeName Condition="$([MSBuild]::IsOSPlatform('Windows'))">whatsbox.exe</InboxNativeName>
+    <InboxNativeBinary>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)$(BaseIntermediateOutputPath)native\$(InboxNativeName)'))</InboxNativeBinary>
     <NativeWhatsBoxSourceRoot>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)..\WhatsBox.Native'))</NativeWhatsBoxSourceRoot>
-    <NativeWhatsBoxOutput>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)$(BaseIntermediateOutputPath)native\$(NativeWhatsBoxName)'))</NativeWhatsBoxOutput>
+    <InboxIncludeNativeAfterTargets>BuildNativeWhatsBox</InboxIncludeNativeAfterTargets>
+    <InboxPackNativeDependsOn>BuildWhatsBoxRidNative</InboxPackNativeDependsOn>
   </PropertyGroup>
 
   <!--
-    Pointer (`dotnet pack`): lib/net10.0/WhatsBox.dll + runtime.json.
+    Pointer (`dotnet pack`): lib/net10.0/WhatsBox.dll + runtime.json (Inbox.targets).
     RID (`dotnet pack -r`): runtimes/{rid}/native/whatsbox[.exe] from the Go sidecar.
     Not PackAsTool — a DotnetTool pointer cannot be PackageReferenced (NU1212).
   -->
-  <PropertyGroup>
-    <TargetsForTfmSpecificContentInPackage>$(TargetsForTfmSpecificContentInPackage);PackWhatsBoxNativeBinary</TargetsForTfmSpecificContentInPackage>
-  </PropertyGroup>
 
   <PropertyGroup Condition="'$(RuntimeIdentifier)' != ''">
     <_WhatsBoxRidGoos Condition="$(RuntimeIdentifier.StartsWith('win-'))">windows</_WhatsBoxRidGoos>
@@ -34,10 +28,9 @@
     <_WhatsBoxRidGoos Condition="$(RuntimeIdentifier.StartsWith('osx-'))">darwin</_WhatsBoxRidGoos>
     <_WhatsBoxRidGoarch Condition="$(RuntimeIdentifier.EndsWith('-x64'))">amd64</_WhatsBoxRidGoarch>
     <_WhatsBoxRidGoarch Condition="$(RuntimeIdentifier.EndsWith('-arm64'))">arm64</_WhatsBoxRidGoarch>
-    <_WhatsBoxRidNativeName Condition="$(RuntimeIdentifier.StartsWith('win-'))">whatsbox.exe</_WhatsBoxRidNativeName>
-    <_WhatsBoxRidNativeName Condition="'$(_WhatsBoxRidNativeName)' == ''">whatsbox</_WhatsBoxRidNativeName>
-    <_WhatsBoxRidNativeDir>$([System.IO.Path]::GetFullPath('$(IntermediateOutputPath)runtimes\$(RuntimeIdentifier)\native\'))</_WhatsBoxRidNativeDir>
-    <_WhatsBoxRidNativeBinary>$(_WhatsBoxRidNativeDir)$(_WhatsBoxRidNativeName)</_WhatsBoxRidNativeBinary>
+    <InboxNativeName>whatsbox</InboxNativeName>
+    <InboxNativeName Condition="$(RuntimeIdentifier.StartsWith('win-'))">whatsbox.exe</InboxNativeName>
+    <InboxNativeBinary>$([System.IO.Path]::GetFullPath('$(IntermediateOutputPath)runtimes\$(RuntimeIdentifier)\native\$(InboxNativeName)'))</InboxNativeBinary>
   </PropertyGroup>
 
   <ItemGroup>
@@ -45,86 +38,31 @@
     <PackageReference Include="JsonPeek" Version="1.3.0" PrivateAssets="all" />
     <PackageReference Include="JsonPoke" Version="1.3.0" PrivateAssets="all" />
     <PackageReference Include="Readme" Version="1.2.1" PrivateAssets="all" />
-    <ProjectReference Include="..\Inbox\Inbox.csproj" PrivateAssets="all" />
+    <ProjectReference Include="..\Inbox\Inbox.csproj" />
     <InternalsVisibleTo Include="Tests" />
   </ItemGroup>
 
-  <PropertyGroup>
-    <TargetsForTfmSpecificBuildOutput>$(TargetsForTfmSpecificBuildOutput);PackInboxReferenceOutput</TargetsForTfmSpecificBuildOutput>
-  </PropertyGroup>
-
-  <Target Name="PackInboxReferenceOutput" DependsOnTargets="BuildOnlySettings;ResolveReferences" Condition="'$(RuntimeIdentifier)' == ''">
-    <ItemGroup>
-      <BuildOutputInPackage Include="@(ReferenceCopyLocalPaths)" Condition="'%(Filename)' == 'Inbox'">
-        <TargetPath>%(Filename)%(Extension)</TargetPath>
-      </BuildOutputInPackage>
-    </ItemGroup>
-  </Target>
-
   <!-- Build the current-OS whatsbox next to this project so project-reference copy lands it in the consumer outdir. -->
-  <Target Name="BuildNativeWhatsBox" BeforeTargets="BeforeCompile;GetCopyToOutputDirectoryItems;AssignTargetPaths" Inputs="$(NativeWhatsBoxSourceRoot)\**\*.go;$(NativeWhatsBoxSourceRoot)\go.mod;$(NativeWhatsBoxSourceRoot)\go.sum" Outputs="$(NativeWhatsBoxOutput)">
-    <MakeDir Directories="$([System.IO.Path]::GetDirectoryName($(NativeWhatsBoxOutput)))" />
-    <Exec Command="go build -o &quot;$(NativeWhatsBoxOutput)&quot; ." WorkingDirectory="$(NativeWhatsBoxSourceRoot)" EnvironmentVariables="CGO_ENABLED=0" />
-  </Target>
-
-  <Target Name="IncludeNativeWhatsBox" AfterTargets="BuildNativeWhatsBox" BeforeTargets="GetCopyToOutputDirectoryItems;AssignTargetPaths">
-    <ItemGroup>
-      <ContentWithTargetPath Include="$(NativeWhatsBoxOutput)" Condition="Exists('$(NativeWhatsBoxOutput)')">
-        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-        <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
-        <TargetPath>$(NativeWhatsBoxName)</TargetPath>
-        <Visible>false</Visible>
-        <Pack>false</Pack>
-      </ContentWithTargetPath>
-    </ItemGroup>
-  </Target>
-
-  <Target Name="WriteWhatsBoxRuntimeJson"
-          BeforeTargets="_GetPackageFiles;GenerateNuspec"
-          Condition="'$(RuntimeIdentifier)' == ''">
-    <PropertyGroup>
-      <_WhatsBoxRuntimeJson>$([System.IO.Path]::GetFullPath('$(IntermediateOutputPath)runtime.json'))</_WhatsBoxRuntimeJson>
-    </PropertyGroup>
-    <ItemGroup>
-      <_WhatsBoxRid Include="$(RuntimeIdentifiers)" />
-    </ItemGroup>
-    <Copy
-      SourceFiles="$(MSBuildThisFileDirectory)runtime.json"
-      DestinationFiles="$(_WhatsBoxRuntimeJson)"
-      SkipUnchangedFiles="false"
-      OverwriteReadOnlyFiles="true" />
-    <JsonPoke
-      ContentPath="$(_WhatsBoxRuntimeJson)"
-      Query="$.runtimes['%(_WhatsBoxRid.Identity)'].WhatsBox['WhatsBox.%(_WhatsBoxRid.Identity)']"
-      Value="'[$(Version), )'" />
-    <JsonPeek ContentPath="$(_WhatsBoxRuntimeJson)" Query="$.runtimes">
-      <Output TaskParameter="Result" ItemName="_WhatsBoxWrittenRuntimes" />
-    </JsonPeek>
-    <Error
-      Condition="'@(_WhatsBoxWrittenRuntimes)' == ''"
-      Text="runtime.json has no runtimes after writing RIDs from RuntimeIdentifiers." />
-    <ItemGroup>
-      <None Include="$(_WhatsBoxRuntimeJson)" Pack="true" PackagePath="runtime.json" />
-    </ItemGroup>
+  <Target Name="BuildNativeWhatsBox" Condition="'$(RuntimeIdentifier)' == ''" 
+          BeforeTargets="BeforeCompile;GetCopyToOutputDirectoryItems;AssignTargetPaths" 
+          Inputs="$(NativeWhatsBoxSourceRoot)\**\*.go;$(NativeWhatsBoxSourceRoot)\go.mod;$(NativeWhatsBoxSourceRoot)\go.sum" 
+          Outputs="$(InboxNativeBinary)">
+    <MakeDir Directories="$([System.IO.Path]::GetDirectoryName($(InboxNativeBinary)))" />
+    <Exec Command="go build -o &quot;$(InboxNativeBinary)&quot; ." 
+          WorkingDirectory="$(NativeWhatsBoxSourceRoot)" 
+          EnvironmentVariables="CGO_ENABLED=0" />
   </Target>
 
   <Target Name="BuildWhatsBoxRidNative" Condition="'$(RuntimeIdentifier)' != ''"
           Inputs="$(NativeWhatsBoxSourceRoot)\**\*.go;$(NativeWhatsBoxSourceRoot)\go.mod;$(NativeWhatsBoxSourceRoot)\go.sum"
-          Outputs="$(_WhatsBoxRidNativeBinary)">
+          Outputs="$(InboxNativeBinary)">
     <Error Condition="'$(_WhatsBoxRidGoos)' == '' or '$(_WhatsBoxRidGoarch)' == ''"
            Text="Unsupported RuntimeIdentifier '$(RuntimeIdentifier)'. Supported: $(RuntimeIdentifiers)." />
-    <MakeDir Directories="$(_WhatsBoxRidNativeDir)" />
-    <Exec Command="go build -o &quot;$(_WhatsBoxRidNativeBinary)&quot; ."
+    <MakeDir Directories="$([System.IO.Path]::GetDirectoryName($(InboxNativeBinary)))" />
+    <Exec Command="go build -o &quot;$(InboxNativeBinary)&quot; ."
           WorkingDirectory="$(NativeWhatsBoxSourceRoot)"
           EnvironmentVariables="CGO_ENABLED=0;GOOS=$(_WhatsBoxRidGoos);GOARCH=$(_WhatsBoxRidGoarch)" />
   </Target>
 
-  <Target Name="PackWhatsBoxNativeBinary" DependsOnTargets="BuildWhatsBoxRidNative" Condition="'$(RuntimeIdentifier)' != ''" Returns="@(TfmSpecificPackageFile)">
-    <Error Condition="!Exists('$(_WhatsBoxRidNativeBinary)')" Text="Expected Go native binary '$(_WhatsBoxRidNativeBinary)' so the RID package can expose runtimes/$(RuntimeIdentifier)/native/." />
-    <ItemGroup>
-      <TfmSpecificPackageFile Include="$(_WhatsBoxRidNativeBinary)">
-        <PackagePath>runtimes/$(RuntimeIdentifier)/native/</PackagePath>
-      </TfmSpecificPackageFile>
-    </ItemGroup>
-  </Target>
+  <Import Project="..\Inbox\build\Inbox.targets" Condition="'$(InboxTargetsImported)' != 'true'" />
 </Project>
diff --git a/src/WhatsBox/runtime.json b/src/WhatsBox/runtime.json
deleted file mode 100644
index 44ec497..0000000
--- a/src/WhatsBox/runtime.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "runtimes": {
-  }
-}
diff --git a/src/WhatsDemo.Tests/nuget.config b/src/WhatsDemo.Tests/nuget.config
index d10713c..8cd84dc 100644
--- a/src/WhatsDemo.Tests/nuget.config
+++ b/src/WhatsDemo.Tests/nuget.config
@@ -21,6 +21,8 @@
       <package pattern="WhatsBox.*" />
       <package pattern="wd" />
       <package pattern="wd.*" />
+      <package pattern="Inbox" />
+      <package pattern="Inbox.*" />
     </packageSource>
   </packageSourceMapping>
 </configuration>
diff --git a/src/WhatsDemo/nuget.config b/src/WhatsDemo/nuget.config
index d10713c..8cd84dc 100644
--- a/src/WhatsDemo/nuget.config
+++ b/src/WhatsDemo/nuget.config
@@ -21,6 +21,8 @@
       <package pattern="WhatsBox.*" />
       <package pattern="wd" />
       <package pattern="wd.*" />
+      <package pattern="Inbox" />
+      <package pattern="Inbox.*" />
     </packageSource>
   </packageSourceMapping>
 </configuration>