diff --git a/External/Pearl b/External/Pearl
index a392ba39..ed66e1e8 160000
--- a/External/Pearl
+++ b/External/Pearl
@@ -1 +1 @@
-Subproject commit a392ba39e344b6c7da144dcdfb6046235fb24991
+Subproject commit ed66e1e8c426aadc98ba4317920808a53e661bdd
diff --git a/MasterPassword-iOS.xcodeproj/project.pbxproj b/MasterPassword-iOS.xcodeproj/project.pbxproj
index 2496f1ba..9b4678dd 100644
--- a/MasterPassword-iOS.xcodeproj/project.pbxproj
+++ b/MasterPassword-iOS.xcodeproj/project.pbxproj
@@ -31,6 +31,8 @@
 		DA30E9D415722EF400A68B4C /* Pearl-UIKit.m in Sources */ = {isa = PBXBuildFile; fileRef = DA30E9D315722EF400A68B4C /* Pearl-UIKit.m */; };
 		DA30E9D715723E6900A68B4C /* PearlLazy.h in Headers */ = {isa = PBXBuildFile; fileRef = DA30E9D515723E6900A68B4C /* PearlLazy.h */; };
 		DA30E9D815723E6900A68B4C /* PearlLazy.m in Sources */ = {isa = PBXBuildFile; fileRef = DA30E9D615723E6900A68B4C /* PearlLazy.m */; };
+		DA3509FE15F101A500C14A8E /* PearlQueue.h in Headers */ = {isa = PBXBuildFile; fileRef = DA3509FC15F101A500C14A8E /* PearlQueue.h */; };
+		DA3509FF15F101A500C14A8E /* PearlQueue.m in Sources */ = {isa = PBXBuildFile; fileRef = DA3509FD15F101A500C14A8E /* PearlQueue.m */; };
 		DA3EF17B15A47744003ABF4E /* SenTestingKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = DA3EF17A15A47744003ABF4E /* SenTestingKit.framework */; };
 		DA3EF17C15A47744003ABF4E /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = DA5BFA48147E415C00F98B1E /* UIKit.framework */; };
 		DA3EF17D15A47744003ABF4E /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = DA5BFA4A147E415C00F98B1E /* Foundation.framework */; };
@@ -998,6 +1000,8 @@
 		DA30E9D315722EF400A68B4C /* Pearl-UIKit.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "Pearl-UIKit.m"; sourceTree = "<group>"; };
 		DA30E9D515723E6900A68B4C /* PearlLazy.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PearlLazy.h; sourceTree = "<group>"; };
 		DA30E9D615723E6900A68B4C /* PearlLazy.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PearlLazy.m; sourceTree = "<group>"; };
+		DA3509FC15F101A500C14A8E /* PearlQueue.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PearlQueue.h; sourceTree = "<group>"; };
+		DA3509FD15F101A500C14A8E /* PearlQueue.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PearlQueue.m; sourceTree = "<group>"; };
 		DA3EF17915A47744003ABF4E /* Tests.octest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = Tests.octest; sourceTree = BUILT_PRODUCTS_DIR; };
 		DA3EF17A15A47744003ABF4E /* SenTestingKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = SenTestingKit.framework; path = Library/Frameworks/SenTestingKit.framework; sourceTree = DEVELOPER_DIR; };
 		DA3EF18015A47744003ABF4E /* Tests-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "Tests-Info.plist"; sourceTree = "<group>"; };
@@ -3446,6 +3450,8 @@
 		DAFE45D715039823003ABA7C /* Pearl */ = {
 			isa = PBXGroup;
 			children = (
+				DA3509FC15F101A500C14A8E /* PearlQueue.h */,
+				DA3509FD15F101A500C14A8E /* PearlQueue.m */,
 				93D393B97158D7BE9332EA53 /* NSDictionary+Indexing.h */,
 				93D39AA1EE2E1E7B81372240 /* NSDictionary+Indexing.m */,
 				93D396D04E57792A54D437AC /* NSArray+Indexing.h */,
@@ -3689,6 +3695,7 @@
 				93D39C34FE35830EF5BE1D2A /* NSArray+Indexing.h in Headers */,
 				93D392EC39DA43C46C692C12 /* NSDictionary+Indexing.h in Headers */,
 				93D3932889B6B4206E66A6D6 /* PearlEMail.h in Headers */,
+				DA3509FE15F101A500C14A8E /* PearlQueue.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -4868,6 +4875,7 @@
 				93D395F08A087F8A24689347 /* NSArray+Indexing.m in Sources */,
 				93D39E281E3658B30550CB55 /* NSDictionary+Indexing.m in Sources */,
 				93D39262A8A97DB748213309 /* PearlEMail.m in Sources */,
+				DA3509FF15F101A500C14A8E /* PearlQueue.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/Pearl/Pearl-Prefix.pch b/Pearl/Pearl-Prefix.pch
index f8f96238..9bbe59ee 100644
--- a/Pearl/Pearl-Prefix.pch
+++ b/Pearl/Pearl-Prefix.pch
@@ -7,6 +7,7 @@
 #endif
 
 #define PEARL_WITH_SCRYPT
+#define PEARL_WITH_MESSAGEUI
 
 #define PEARL
 #define PEARL_CRYPTO