diff --git a/Dumped Classes/IMFoundation_ClassDump.h b/Dumped Classes/IMFoundation_ClassDump.h
index 18e8613..bab4c33 100644
--- a/Dumped Classes/IMFoundation_ClassDump.h	
+++ b/Dumped Classes/IMFoundation_ClassDump.h	
@@ -1898,3 +1898,29 @@ typedef void (^CDUnknownBlockType)(void); // return type and parameters are unkn
 - (void)differencesFromArray:(id)arg1 removedIndexes:(id *)arg2 insertedIndexes:(id *)arg3;
 @end
 
+extern BOOL IMStringIsEmail (NSString *string);
+
+extern NSString* IMStripFormattingFromAddress (NSString *address);
+
+typedef void(^IMChatCalculateServiceForSendingCompletionBlock) (BOOL          allAddressesiMessageCapable,
+                                                                NSDictionary *availabilityPerRecipient,
+                                                                BOOL          checkedServer,
+                                                                NSError      *error);
+
+extern void IMChatCalculateServiceForSendingNewComposeMaybeForce (NSArray   *addresses,
+                                                                  NSString  *senderLastAddressedHandle,
+                                                                  NSString  *senderLastAddressedSIMID,
+                                                                  BOOL       forceMMS,
+                                                                  BOOL       hasEmailRecipients,
+                                                                  BOOL       lastSentMessageWasNotDelivered,
+                                                                  BOOL       conversationWasDowngraded,
+                                                                  BOOL       hasConversationHistory,
+                                                                  IMService *previousService,
+                                                                  IMChatCalculateServiceForSendingCompletionBlock completion);
+
+
+// IDS
+
+extern NSString *IDSCopyIDForPhoneNumber(NSString *phoneNumber);
+extern NSString *IDSCopyIDForEmailAddress(NSString *emailAddress);
+
diff --git a/MessagesBridge.xcodeproj/project.pbxproj b/MessagesBridge.xcodeproj/project.pbxproj
index af6d7d7..1660b63 100644
--- a/MessagesBridge.xcodeproj/project.pbxproj
+++ b/MessagesBridge.xcodeproj/project.pbxproj
@@ -81,6 +81,8 @@
 		CD602062219B68950024D9C5 /* MBIMSendMessageOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = CD602061219B68950024D9C5 /* MBIMSendMessageOperation.m */; };
 		CD83E156219BE10A00F4CCEA /* hooking.m in Sources */ = {isa = PBXBuildFile; fileRef = CD83E155219BE10A00F4CCEA /* hooking.m */; };
 		CD83E166219BE91600F4CCEA /* agentHook.m in Sources */ = {isa = PBXBuildFile; fileRef = CD83E165219BE91600F4CCEA /* agentHook.m */; };
+		CDD8C98426977D2A00551AE5 /* MBIMAliasValidationOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = CDD8C98326977D2A00551AE5 /* MBIMAliasValidationOperation.m */; };
+		CDD8C9862697996800551AE5 /* IDS.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = CDD8C9852697996700551AE5 /* IDS.framework */; };
 		CDE4556421A3578A0041F5DD /* IMChat+Encoded.m in Sources */ = {isa = PBXBuildFile; fileRef = CDE4556321A3578A0041F5DD /* IMChat+Encoded.m */; };
 		CDE455A121A365AD0041F5DD /* MBIMMarkOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = CDE455A021A365AD0041F5DD /* MBIMMarkOperation.m */; };
 		CDE455A421A5308D0041F5DD /* MBIMFetchAttachmentOperation.m in Sources */ = {isa = PBXBuildFile; fileRef = CDE455A321A5308D0041F5DD /* MBIMFetchAttachmentOperation.m */; };
@@ -236,6 +238,9 @@
 		CD83E161219BE91500F4CCEA /* libagentHook.dylib */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.dylib"; includeInIndex = 0; path = libagentHook.dylib; sourceTree = BUILT_PRODUCTS_DIR; };
 		CD83E165219BE91600F4CCEA /* agentHook.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = agentHook.m; sourceTree = "<group>"; };
 		CD83E1B5219BF78E00F4CCEA /* hookAgent.sh */ = {isa = PBXFileReference; lastKnownFileType = text.script.sh; path = hookAgent.sh; sourceTree = "<group>"; };
+		CDD8C98226977D2A00551AE5 /* MBIMAliasValidationOperation.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MBIMAliasValidationOperation.h; sourceTree = "<group>"; };
+		CDD8C98326977D2A00551AE5 /* MBIMAliasValidationOperation.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MBIMAliasValidationOperation.m; sourceTree = "<group>"; };
+		CDD8C9852697996700551AE5 /* IDS.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = IDS.framework; path = System/Library/PrivateFrameworks/IDS.framework; sourceTree = SDKROOT; };
 		CDE4556221A3578A0041F5DD /* IMChat+Encoded.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "IMChat+Encoded.h"; sourceTree = "<group>"; };
 		CDE4556321A3578A0041F5DD /* IMChat+Encoded.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "IMChat+Encoded.m"; sourceTree = "<group>"; };
 		CDE4559F21A365AD0041F5DD /* MBIMMarkOperation.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MBIMMarkOperation.h; sourceTree = "<group>"; };
@@ -274,6 +279,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				CDD8C9862697996800551AE5 /* IDS.framework in Frameworks */,
 				1A257CCB23A8681200A4A2C8 /* Security.framework in Frameworks */,
 				1ACFCFDF219EB31400E2C237 /* CocoaHTTPServer.framework in Frameworks */,
 				1A257CC923A867EF00A4A2C8 /* IMCore.framework in Frameworks */,
@@ -321,6 +327,7 @@
 		1A0C445E219A45B400F2AC00 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				CDD8C9852697996700551AE5 /* IDS.framework */,
 				1A257CCA23A8681200A4A2C8 /* Security.framework */,
 				1A257CC823A867EF00A4A2C8 /* IMCore.framework */,
 			);
@@ -522,6 +529,10 @@
 				1AA43E90219EBB3400EDF1A7 /* Utilities */,
 				CD602054219B5DFD0024D9C5 /* MBIMBridgeOperation.h */,
 				CD602055219B5DFD0024D9C5 /* MBIMBridgeOperation.m */,
+				CDD8C98226977D2A00551AE5 /* MBIMAliasValidationOperation.h */,
+				CDD8C98326977D2A00551AE5 /* MBIMAliasValidationOperation.m */,
+				CD2ECEC0269539100055E302 /* MBIMAuthenticateOperation.h */,
+				CD2ECEC1269539100055E302 /* MBIMAuthenticateOperation.m */,
 				CD60205A219B623F0024D9C5 /* MBIMMessagesListOperation.h */,
 				CD60205B219B623F0024D9C5 /* MBIMMessagesListOperation.m */,
 				CD60205D219B674B0024D9C5 /* MBIMConversationListOperation.h */,
@@ -536,8 +547,6 @@
 				CD14F1A0219FE7D600E7DD22 /* MBIMUpdatePollOperation.m */,
 				1AD8936C21EFD986009B599A /* MBIMUploadAttachmentOperation.h */,
 				1AD8936D21EFD986009B599A /* MBIMUploadAttachmentOperation.m */,
-				CD2ECEC0269539100055E302 /* MBIMAuthenticateOperation.h */,
-				CD2ECEC1269539100055E302 /* MBIMAuthenticateOperation.m */,
 			);
 			path = Operations;
 			sourceTree = "<group>";
@@ -840,6 +849,7 @@
 				CDF6233A219A8A5600690038 /* MBIMBridge.m in Sources */,
 				CDF62335219A895D00690038 /* main.m in Sources */,
 				CD60205C219B623F0024D9C5 /* MBIMMessagesListOperation.m in Sources */,
+				CDD8C98426977D2A00551AE5 /* MBIMAliasValidationOperation.m in Sources */,
 				CD14F1AA219FF3B800E7DD22 /* MBIMUpdateQueue.m in Sources */,
 				CD14F1A4219FF22700E7DD22 /* IMMessageItem+Encoded.m in Sources */,
 				CD602062219B68950024D9C5 /* MBIMSendMessageOperation.m in Sources */,
diff --git a/kordophone/Bridge/Operations/MBIMAliasValidationOperation.h b/kordophone/Bridge/Operations/MBIMAliasValidationOperation.h
new file mode 100644
index 0000000..401693f
--- /dev/null
+++ b/kordophone/Bridge/Operations/MBIMAliasValidationOperation.h
@@ -0,0 +1,17 @@
+//
+//  MBIMAliasValidationOperation.h
+//  MBIMAliasValidationOperation
+//
+//  Created by James Magahern on 7/8/21.
+//  Copyright © 2021 James Magahern. All rights reserved.
+//
+
+#import "MBIMBridgeOperation.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MBIMAliasValidationOperation : MBIMBridgeOperation
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/kordophone/Bridge/Operations/MBIMAliasValidationOperation.m b/kordophone/Bridge/Operations/MBIMAliasValidationOperation.m
new file mode 100644
index 0000000..f669921
--- /dev/null
+++ b/kordophone/Bridge/Operations/MBIMAliasValidationOperation.m
@@ -0,0 +1,58 @@
+//
+//  MBIMAliasValidationOperation.m
+//  MBIMAliasValidationOperation
+//
+//  Created by James Magahern on 7/8/21.
+//  Copyright © 2021 James Magahern. All rights reserved.
+//
+
+#import "MBIMAliasValidationOperation.h"
+
+#import "IMCore_ClassDump.h"
+#import "IMFoundation_ClassDump.h"
+
+@implementation MBIMAliasValidationOperation
+
++ (void)load { [super load]; }
+
++ (NSString *)endpointName
+{
+    return @"validate";
+}
+
+- (void)main
+{
+    NSString *address = [self valueForQueryItemWithName:@"address"];
+    if ([address length] == 0) {
+        self.serverCompletionBlock([[HTTPErrorResponse alloc] initWithErrorCode:401]);
+        return;
+    }
+    
+    NSString *unformattedAddress = IMStripFormattingFromAddress(address);
+    IMAccount *iMessageAccount = [[IMAccountController sharedInstance] bestAccountForService:[IMServiceImpl iMessageService]];
+    IMHandle *handle = [iMessageAccount imHandleWithID:unformattedAddress];
+    
+    BOOL isEmailAddress = IMStringIsEmail(unformattedAddress);
+    
+    NSString *IDSaddress = isEmailAddress ? IDSCopyIDForEmailAddress(unformattedAddress)
+                                          : IDSCopyIDForPhoneNumber(unformattedAddress);
+    
+    if (!IDSaddress) {
+        MBIMLogError(@"Could not get IDS address for: %@", unformattedAddress);
+        self.serverCompletionBlock([[HTTPErrorResponse alloc] initWithErrorCode:401]);
+        return;
+    }
+    
+    IMChatCalculateServiceForSendingNewComposeMaybeForce(
+        @[ IDSaddress ], nil, nil, NO, isEmailAddress, NO, NO, NO, nil,
+    ^(BOOL allAddressesiMessageCapable, NSDictionary *availabilityPerRecipient, BOOL checkedServer, NSError *error) {
+        NSLog(@"Capable: %d", allAddressesiMessageCapable);
+        NSLog(@"Avail: %@", availabilityPerRecipient);
+        self.serverCompletionBlock([MBIMJSONDataResponse responseWithJSONObject:@{
+            @"capable" : @(allAddressesiMessageCapable),
+        }]);
+    });
+    
+}
+
+@end