diff --git a/enzevalos_iphone/SendViewController.swift b/enzevalos_iphone/SendViewController.swift
index ad3232eb6c717d076e4e5d83664e0196d8000f79..1f2bcd56253a059d0b5b6ead26d2a609f31e7b3b 100644
--- a/enzevalos_iphone/SendViewController.swift
+++ b/enzevalos_iphone/SendViewController.swift
@@ -507,9 +507,14 @@ class SendViewController: UIViewController {
     //Navigationbar
 
     var currentSecurityState: Bool {
-        toSecure = toText.dataSource!.isSecure!(toText) //TODO: Add pref enc field.
-        ccSecure = ccText.dataSource!.isSecure!(ccText)
-        return toSecure && ccSecure
+        guard let toSource = toText.dataSource, let ccSource = ccText.dataSource else {
+            return true
+        }
+        
+        let toKey = toSource.allSecure(toText)
+        let ccKey = ccSource.allSecure(ccText)
+        
+        return toKey && ccKey
     }
 
     var someoneWithKeyPresent: Bool {
@@ -523,6 +528,17 @@ class SendViewController: UIViewController {
         return toKey || ccKey
     }
 
+    var someoneWithoutKeyPresent: Bool {
+        guard let toSource = toText.dataSource, let ccSource = ccText.dataSource else {
+            return true
+        }
+        
+        let toKey = toSource.someInsecure(toText)
+        let ccKey = ccSource.someInsecure(ccText)
+        
+        return toKey || ccKey
+    }
+
     func updateNavigationBar() {
         if currentSecurityState {
             self.navigationController?.navigationBar.barTintColor = ThemeManager.encryptedMessageColor()
@@ -560,9 +576,9 @@ class SendViewController: UIViewController {
         let alert: UIAlertController
         let url: String
         if !UISecurityState {
-            alert = UIAlertController(title: NSLocalizedString("Postcard", comment: "Postcard label"), message: NSLocalizedString("SendInsecureInfo", comment: "Postcard infotext"), preferredStyle: .alert)
-            url = "https://enzevalos.org/infos/postcard"
-            if subjectText.inputText() != NSLocalizedString("inviteSubject", comment: "") {
+            alert = UIAlertController(title: NSLocalizedString("Postcard", comment: "Postcard label"), message: sendEncryptedIfPossible ? NSLocalizedString("SendInsecureInfo", comment: "Postcard infotext") : NSLocalizedString("SendInsecureInfoAll", comment: "Postcard infotext"), preferredStyle: .alert)
+            url = "https://userpage.fu-berlin.de/wieseoli/letterbox/faq.html#headingPostcard"
+            if subjectText.inputText() != NSLocalizedString("inviteSubject", comment: "") && !currentSecurityState {
                 alert.addAction(UIAlertAction(title: NSLocalizedString("inviteContacts", comment: "Allows users to invite contacts without encryption key"), style: .default, handler: {
                     (action: UIAlertAction) -> Void in
 //                    Logger.queue.async(flags: .barrier) {
@@ -573,11 +589,11 @@ class SendViewController: UIViewController {
             }
         } else {
             alert = UIAlertController(title: NSLocalizedString("Letter", comment: "Letter label"), message: NSLocalizedString("SendSecureInfo", comment: "Letter infotext"), preferredStyle: .alert)
-            url = "https://enzevalos.org/infos/letter"
+            url = "https://userpage.fu-berlin.de/wieseoli/letterbox/faq.html#secureMail"
         }
         if someoneWithKeyPresent {
             if sendEncryptedIfPossible {
-                alert.addAction(UIAlertAction(title: NSLocalizedString("sendInsecure", comment: "This mail should be send insecurely"), style: .default, handler: { (action: UIAlertAction!) -> Void in
+                alert.addAction(UIAlertAction(title: someoneWithoutKeyPresent ? NSLocalizedString("sendInsecureAll", comment: "This mail should be send insecurely to everyone, including contacts with keys") : NSLocalizedString("sendInsecure", comment: "This mail should be send insecurely"), style: .default, handler: { (action: UIAlertAction!) -> Void in
 //                    Logger.queue.async(flags: .barrier) {
                         Logger.log(close: url, mail: nil, action: "sendInsecure")
 //                    }
@@ -585,7 +601,7 @@ class SendViewController: UIViewController {
                     DispatchQueue.main.async { self.animateIfNeeded() }
                 }))
             } else {
-                alert.addAction(UIAlertAction(title: NSLocalizedString("sendSecureIfPossible", comment: "This mail should be send securely"), style: .default, handler: { (action: UIAlertAction!) -> Void in
+                alert.addAction(UIAlertAction(title: someoneWithoutKeyPresent ? NSLocalizedString("sendSecureIfPossible", comment: "This mail should be send securely to people with keys") : NSLocalizedString("sendSecure", comment: "This mail should be send securely"), style: .default, handler: { (action: UIAlertAction!) -> Void in
 //                    Logger.queue.async(flags: .barrier) {
                         Logger.log(close: url, mail: nil, action: "sendSecureIfPossible")
 //                    }
@@ -699,15 +715,35 @@ extension SendViewController: UIGestureRecognizerDelegate {
 
 extension VENTokenFieldDataSource {
     func someSecure(_ tokenField: VENTokenField) -> Bool {
-        var secure = false
         for entry in tokenField.mailTokens {
-            var hasKey = false
-            if let madr = DataHandler.handler.findMailAddress(adr: entry as! String) {
-                hasKey = madr.hasKey
+            if let madr = DataHandler.handler.findMailAddress(adr: entry as! String), madr.hasKey {
+                return true
             }
-            secure = secure || hasKey
         }
 
-        return secure
+        return false
+    }
+    
+    func someInsecure(_ tokenField: VENTokenField) -> Bool {
+        for entry in tokenField.mailTokens {
+            if let madr = DataHandler.handler.findMailAddress(adr: entry as! String), !madr.hasKey {
+                return true
+            }
+        }
+        
+        return false
+    }
+    
+    /**
+     Returns a bool showing whether all contacts in the field have a key. Returns true if no contacts are present.
+     */
+    func allSecure(_ tokenField: VENTokenField) -> Bool {
+        for entry in tokenField.mailTokens {
+            if let madr = DataHandler.handler.findMailAddress(adr: entry as! String), !madr.hasKey {
+                return false
+            }
+        }
+        
+        return true
     }
 }
diff --git a/enzevalos_iphone/de.lproj/Localizable.strings b/enzevalos_iphone/de.lproj/Localizable.strings
index a398f7d739b74e99e8a477728a9f9e088c6b7f37..bffe4f01cdc2b2d892982037d20defc4bcadb66a 100644
--- a/enzevalos_iphone/de.lproj/Localizable.strings
+++ b/enzevalos_iphone/de.lproj/Localizable.strings
@@ -98,6 +98,7 @@
 "Send" = "Senden";
 "SendError" = "Ein Fehler ist aufgetreten"; //mehr spezifizieren?
 "SendInsecureInfo" = "Diese Nachricht würde unsicher an alle orange eingefärbten Kontakte gesendet werden. Somit kann sie unterwegs von anderen gelesen oder manipuliert werden. Du könntest die orangen Kontakte einladen Enzavalos zu verwenden, um sicher mit ihnen zu kommunizieren."; //anstatt unterwegs: auf ihrem Weg
+"SendInsecureInfoAll" = "Diese Nachricht würde unsicher an alle Kontakte gesendet werden. Somit kann sie unterwegs von anderen gelesen oder manipuliert werden. Du könntest die orangen Kontakte einladen Enzavalos zu verwenden, um sicher mit ihnen zu kommunizieren."; //anstatt unterwegs: auf ihrem Weg
 "SendSecureInfo" = "Super! Diese Nachricht würde sicher versendet werden. Somit ist ihr Inhalt vor neugierigen Augen geschützt und kann nicht manipuliert werden.";
 "SendSuccess" = "Erfolgreich gesendet";
 "Sent" = "Gesendet";
@@ -155,8 +156,10 @@
 "thisIsYou" = "Hier werden E-Mails, die du dir selber schickst, gesammelt";
 "didYouSendThis" = "Hallo, haben Sie mir diese E-Mail geschickt?\nIch frage nur, weil die E-Mail unsicher versendet wurde.\n\n";
 "reactButton" = "Bestätigung erfragen";
-"sendSecureIfPossible" = "Als Brief senden";
+"sendSecureIfPossible" = "Wenn möglich als Brief senden";
 "sendInsecure" = "Als Postkarte senden";
+"sendInsecureAll" = "An alle als Postkarte senden";
+"sendSecure" = "Als Brief senden";
 "verifyContact" = "Kontakt verifizieren";
 "scanQRCode" = "Scanne den QR Code des Kontaktes";
 "wrongQRCode" = "Kein passender QR Code gefunden";
@@ -174,5 +177,3 @@
 "copied" = "Schloss wurde kopiert";
 "copyKey" = "Schloss in Zwischenablage kopieren";
 "NeverUpdated" = "Fehler bei Aktualisierung";
-
-
diff --git a/localization_backup.strings b/localization_backup.strings
index 20e0a10e361f7c121dcb248180c9cefe2277e890..80d6e993ae877a19674ce13ea24aee67fca538db 100644
--- a/localization_backup.strings
+++ b/localization_backup.strings
@@ -97,6 +97,7 @@
 "Send" = "Send";
 "SendError" = "An error occured"; //mehr spezifizieren?
 "SendInsecureInfo" = "This Mail would be send insecurely to all orange contacts. So everybody could read and manipulate it. You could invite them to use Enzevalos to communicate securely.";
+"SendInsecureInfoAll" = "This Mail would be send insecurely to all contacts. So everybody could read and manipulate it. You could invite them to use Enzevalos to communicate securely.";
 "SendSecureInfo" = "Congratulations! This Mail would be send securely. It is impossible for anybody to read or manipulate it.";
 "SendSuccess" = "Sent successfully";
 "Sent" = "Sent";
@@ -152,8 +153,10 @@
 "thisIsYou" = "Emails you sent yourself are collected here";
 "didYouSendThis" = "Hey, did you send me this email?\nI'm just asking because it was sent insecurely.\n\n";
 "reactButton" = "Request Confirmation";
-"sendSecureIfPossible" = "Send secure";
-"sendInsecure" = "Send insecure";
+"sendSecureIfPossible" = "Send as letter when possible";
+"sendInsecure" = "Send as postcard";
+"sendInsecureAll" = "Send as postcard to everyone";
+"sendSecure" = "Send as letter";
 "verifyContact" = "Verify Contact";
 "scanQRCode" = "Scan the QR Code of the Contact";
 "wrongQRCode" = "Incompatible QR Code found";