Hack MFMailComposeViewController because I really really want it to work

App/Browser View/BrowserViewController.swift

@@ -51,6 +51,12 @@ class BrowserViewController: UIViewController
         }
     }
     
+    internal enum PreferredEmailSharingRecipient: String, CaseIterable {
+        case readLater = "Read Later"
+        case bookmark  = "Bookmark"
+        case other     = "Other…"
+    }
+    
     override var preferredStatusBarStyle: UIStatusBarStyle { .lightContent }
     
     internal var changingFocusToAutocompleteController = false
@@ -270,7 +276,7 @@ class BrowserViewController: UIViewController
             
             // Email
             documentControls.emailView.addAction(UIAction { [unowned self] _ in
-                composeEmailForCurrentURL(fromViewController: documentControls)
+                queryPreferredEmailSharingRecipientForCurrentURL(fromViewController: documentControls)
             }, for: .touchUpInside)
             
             // Settings
@@ -324,7 +330,24 @@ class BrowserViewController: UIViewController
         self.present(activityController, animated: true, completion: nil)
     }
     
-    internal func composeEmailForCurrentURL(fromViewController: UIViewController?) {
+    internal func queryPreferredEmailSharingRecipientForCurrentURL(fromViewController: UIViewController?) {
+        if let fromViewController = fromViewController {
+            fromViewController.dismiss(animated: false, completion: nil)
+        }
+        
+        let actionSheet = UIAlertController(title: "Select Preferred Recipient", message: nil, preferredStyle: .actionSheet)
+        for preferredRecipient in PreferredEmailSharingRecipient.allCases {
+            actionSheet.addAction(UIAlertAction(title: preferredRecipient.rawValue, style: .default, handler: { [unowned self] action in
+                actionSheet.dismiss(animated: true, completion: { [unowned self] in
+                    composeEmailForCurrentURL(preferredRecipientSelection: preferredRecipient)
+                })
+            }))
+        }
+        
+        present(actionSheet, animated: true, completion: nil)
+    }
+    
+    internal func composeEmailForCurrentURL(preferredRecipientSelection: PreferredEmailSharingRecipient) {
         guard let url = self.webView.url else { return }
         
         let composeController = MFMailComposeViewController()
@@ -332,10 +355,22 @@ class BrowserViewController: UIViewController
         composeController.setMessageBody(url.absoluteString, isHTML: false)
         composeController.mailComposeDelegate = self
         
-        if let fromViewController = fromViewController {
-            fromViewController.dismiss(animated: false, completion: nil)
+        let preferredRecipient: String? = { preferredRecipientSelection in
+            switch preferredRecipientSelection {
+                case .readLater:
+                    return "read@buzzert.net"
+                case .bookmark:
+                    return "bookmarks@buzzert.net"
+                case .other:
+                    return nil
+            }
+        }(preferredRecipientSelection)
+        
+        if let preferredRecipient = preferredRecipient {
+            composeController.setToRecipients([ preferredRecipient ])
         }
         
+        
         present(composeController, animated: true, completion: nil)
     }
     

App/Hacks/MFMailComposeViewControllerFix.m

@@ -0,0 +1,33 @@
+//
+//  MFMailComposeViewControllerFix.c
+//  App
+//
+//  Created by James Magahern on 5/25/21.
+//
+
+#import <CoreFoundation/CoreFoundation.h>
+#import <MessageUI/MessageUI.h>
+#import <objc/runtime.h>
+
+@interface MFMailComposeViewController (InternalMethods)
++ (BOOL)canSendMailSourceAccountManagement:(NSInteger)sourceAccountManagement;
+@end
+
+static void swizzleClassMethod(Class targetClass, SEL originalSelector, IMP replacementIMP)
+{
+    Method originalMethod = class_getClassMethod(targetClass, originalSelector);
+    method_setImplementation(originalMethod, replacementIMP);
+}
+
+__attribute__((constructor))
+static void swizzleMFMailComposeViewController()
+{
+    // Hacks to work around the fact that MFMailComposeViewController is broken in iOS 14+
+    swizzleClassMethod(MFMailComposeViewController.class, @selector(canSendMail), imp_implementationWithBlock(^BOOL(void) {
+        return YES;
+    }));
+    
+    swizzleClassMethod(MFMailComposeViewController.class, @selector(canSendMailSourceAccountManagement:), imp_implementationWithBlock(^BOOL(NSInteger sam) {
+        return YES;
+    }));
+}