diff --git a/app/src/main/java/eu/faircode/email/AdapterMessage.java b/app/src/main/java/eu/faircode/email/AdapterMessage.java
index 8ceb770b65..620fdc8021 100644
--- a/app/src/main/java/eu/faircode/email/AdapterMessage.java
+++ b/app/src/main/java/eu/faircode/email/AdapterMessage.java
@@ -1654,7 +1654,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             InternetAddress via = null;
             if (message.identityEmail != null)
                 try {
-                    via = new InternetAddress(message.identityEmail, message.identityName);
+                    via = new InternetAddress(message.identityEmail, message.identityName, StandardCharsets.UTF_8.name());
                 } catch (UnsupportedEncodingException ignored) {
                 }
 
diff --git a/app/src/main/java/eu/faircode/email/EntityRule.java b/app/src/main/java/eu/faircode/email/EntityRule.java
index 5c1933f39f..6fe0c996c7 100644
--- a/app/src/main/java/eu/faircode/email/EntityRule.java
+++ b/app/src/main/java/eu/faircode/email/EntityRule.java
@@ -39,6 +39,7 @@ import org.json.JSONObject;
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
@@ -420,7 +421,7 @@ public class EntityRule {
         if (answer == null)
             throw new IllegalArgumentException("Rule answer not found name=" + name);
 
-        Address[] from = new InternetAddress[]{new InternetAddress(identity.email, identity.name)};
+        Address[] from = new InternetAddress[]{new InternetAddress(identity.email, identity.name, StandardCharsets.UTF_8.name())};
 
         // Prevent loop
         List<EntityMessage> messages = db.message().getMessagesByThread(
diff --git a/app/src/main/java/eu/faircode/email/FragmentCompose.java b/app/src/main/java/eu/faircode/email/FragmentCompose.java
index 6258e2eb2d..a5d15e84ba 100644
--- a/app/src/main/java/eu/faircode/email/FragmentCompose.java
+++ b/app/src/main/java/eu/faircode/email/FragmentCompose.java
@@ -150,6 +150,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.UnknownHostException;
+import java.nio.charset.StandardCharsets;
 import java.security.GeneralSecurityException;
 import java.security.PrivateKey;
 import java.security.cert.CertificateException;
@@ -1829,7 +1830,7 @@ public class FragmentCompose extends FragmentBase {
                             if (address != null)
                                 list.addAll(Arrays.asList(address));
 
-                            list.add(new InternetAddress(email, name));
+                            list.add(new InternetAddress(email, name, StandardCharsets.UTF_8.name()));
 
                             if (requestCode == REQUEST_CONTACT_TO)
                                 draft.to = list.toArray(new Address[0]);
@@ -2679,7 +2680,7 @@ public class FragmentCompose extends FragmentBase {
                             if (contact != null && contact.moveToNext()) {
                                 String name = contact.getString(0);
                                 String email = contact.getString(1);
-                                selected.add(new InternetAddress(email, name));
+                                selected.add(new InternetAddress(email, name, StandardCharsets.UTF_8.name()));
                             }
                         }
                     }
@@ -3584,7 +3585,7 @@ public class FragmentCompose extends FragmentBase {
                     data.draft.account = drafts.account;
                     data.draft.folder = drafts.id;
                     data.draft.identity = selected.id;
-                    data.draft.from = new InternetAddress[]{new InternetAddress(selected.email, selected.name)};
+                    data.draft.from = new InternetAddress[]{new InternetAddress(selected.email, selected.name, StandardCharsets.UTF_8.name())};
 
                     data.draft.sender = MessageHelper.getSortKey(data.draft.from);
                     Uri lookupUri = ContactInfo.getLookupUri(data.draft.from);
@@ -3631,7 +3632,7 @@ public class FragmentCompose extends FragmentBase {
                             String email = organizer.getEmail();
                             String name = organizer.getCommonName();
                             if (!TextUtils.isEmpty(email)) {
-                                InternetAddress o = new InternetAddress(email, name);
+                                InternetAddress o = new InternetAddress(email, name, StandardCharsets.UTF_8.name());
                                 Log.i("Setting organizer=" + o);
                                 data.draft.to = new Address[]{o};
                             }
@@ -4049,7 +4050,7 @@ public class FragmentCompose extends FragmentBase {
                     List<EntityAttachment> attachments = db.attachment().getAttachments(draft.id);
 
                     // Get data
-                    InternetAddress[] afrom = (identity == null ? null : new InternetAddress[]{new InternetAddress(identity.email, identity.name)});
+                    InternetAddress[] afrom = (identity == null ? null : new InternetAddress[]{new InternetAddress(identity.email, identity.name, StandardCharsets.UTF_8.name())});
                     InternetAddress[] ato = (TextUtils.isEmpty(to) ? null : InternetAddress.parseHeader(to, false));
                     InternetAddress[] acc = (TextUtils.isEmpty(cc) ? null : InternetAddress.parseHeader(cc, false));
                     InternetAddress[] abcc = (TextUtils.isEmpty(bcc) ? null : InternetAddress.parseHeader(bcc, false));
diff --git a/app/src/main/java/eu/faircode/email/Log.java b/app/src/main/java/eu/faircode/email/Log.java
index b5dddacba8..efe5f2cea5 100644
--- a/app/src/main/java/eu/faircode/email/Log.java
+++ b/app/src/main/java/eu/faircode/email/Log.java
@@ -81,6 +81,7 @@ import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.lang.reflect.Array;
 import java.net.SocketException;
+import java.nio.charset.StandardCharsets;
 import java.security.cert.CertPathValidatorException;
 import java.text.DateFormat;
 import java.util.ArrayList;
@@ -1422,7 +1423,7 @@ public class Log {
     }
 
     static InternetAddress myAddress() throws UnsupportedEncodingException {
-        return new InternetAddress("marcel+fairemail@faircode.eu", "FairCode");
+        return new InternetAddress("marcel+fairemail@faircode.eu", "FairCode", StandardCharsets.UTF_8.name());
     }
 
     static boolean isSupportedDevice() {
diff --git a/app/src/main/java/eu/faircode/email/MessageHelper.java b/app/src/main/java/eu/faircode/email/MessageHelper.java
index 6bf1bf20d9..2c3e2298fb 100644
--- a/app/src/main/java/eu/faircode/email/MessageHelper.java
+++ b/app/src/main/java/eu/faircode/email/MessageHelper.java
@@ -198,7 +198,7 @@ public class MessageHelper {
                 name = null;
                 Log.i("extra=" + email);
             }
-            imessage.setFrom(new InternetAddress(email, name));
+            imessage.setFrom(new InternetAddress(email, name, StandardCharsets.UTF_8.name()));
         }
 
         if (message.to != null && message.to.length > 0)
diff --git a/app/src/main/java/eu/faircode/email/ServiceUI.java b/app/src/main/java/eu/faircode/email/ServiceUI.java
index 2f82733be0..52201e9d73 100644
--- a/app/src/main/java/eu/faircode/email/ServiceUI.java
+++ b/app/src/main/java/eu/faircode/email/ServiceUI.java
@@ -38,6 +38,7 @@ import org.json.JSONException;
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.util.Collections;
 import java.util.Date;
 import java.util.List;
@@ -312,7 +313,7 @@ public class ServiceUI extends IntentService {
             reply.inreplyto = ref.msgid;
             reply.thread = ref.thread;
             reply.to = ref.from;
-            reply.from = new Address[]{new InternetAddress(identity.email, identity.name)};
+            reply.from = new Address[]{new InternetAddress(identity.email, identity.name, StandardCharsets.UTF_8.name())};
             reply.subject = getString(R.string.title_subject_reply, subject);
             reply.received = new Date().getTime();
             reply.seen = true;