diff --git a/damus.xcodeproj/project.pbxproj b/damus.xcodeproj/project.pbxproj
index 8c3d4e20..e9799fa2 100644
--- a/damus.xcodeproj/project.pbxproj
+++ b/damus.xcodeproj/project.pbxproj
@@ -1862,7 +1862,7 @@
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = damus/damus.entitlements;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 4;
+				CURRENT_PROJECT_VERSION = 5;
 				DEVELOPMENT_ASSET_PATHS = "\"damus/Preview Content\"";
 				DEVELOPMENT_TEAM = XK7H4JAB3D;
 				ENABLE_PREVIEWS = YES;
@@ -1904,7 +1904,7 @@
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = damus/damus.entitlements;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 4;
+				CURRENT_PROJECT_VERSION = 5;
 				DEVELOPMENT_ASSET_PATHS = "\"damus/Preview Content\"";
 				DEVELOPMENT_TEAM = XK7H4JAB3D;
 				ENABLE_PREVIEWS = YES;
diff --git a/damus/Util/PostBox.swift b/damus/Util/PostBox.swift
new file mode 100644
index 00000000..49d06b27
--- /dev/null
+++ b/damus/Util/PostBox.swift
@@ -0,0 +1,8 @@
+//
+//  PostBox.swift
+//  damus
+//
+//  Created by William Casarin on 2023-03-20.
+//
+
+import Foundation