diff --git a/sbapp/main.py b/sbapp/main.py
index 9912c23..9d33ab6 100644
--- a/sbapp/main.py
+++ b/sbapp/main.py
@@ -2693,6 +2693,11 @@ class SidebandApp(MDApp):
                 self.sideband.config["lxmf_ignore_unknown"] = self.settings_screen.ids.settings_lxmf_ignore_unknown.active
                 self.sideband.save_configuration()
 
+            def save_lxmf_ignore_invalid_stamps(sender=None, event=None):
+                self.sideband.config["lxmf_ignore_invalid_stamps"] = self.settings_screen.ids.settings_ignore_invalid_stamps.active
+                self.sideband.save_configuration()
+                self.sideband.update_ignore_invalid_stamps()
+
             def save_lxmf_sync_limit(sender=None, event=None):
                 self.sideband.config["lxmf_sync_limit"] = self.settings_screen.ids.settings_lxmf_sync_limit.active
                 self.sideband.save_configuration()
@@ -2762,7 +2767,7 @@ class SidebandApp(MDApp):
                 slider_val = int(self.settings_screen.ids.settings_lxmf_require_stamps_cost.value)
                 cost_text = str(slider_val)
 
-                self.settings_screen.ids.settings_lxmf_require_stamps_label.text = f"Require stamp cost {cost_text} for inbound messages"
+                self.settings_screen.ids.settings_lxmf_require_stamps_label.text = f"Require stamp cost {cost_text} for incoming messages"
                 if save:
                     if slider_val > 32:
                         slider_val = 32
@@ -2826,6 +2831,9 @@ class SidebandApp(MDApp):
             self.settings_screen.ids.settings_lxmf_ignore_unknown.active = self.sideband.config["lxmf_ignore_unknown"]
             self.settings_screen.ids.settings_lxmf_ignore_unknown.bind(active=save_lxmf_ignore_unknown)
 
+            self.settings_screen.ids.settings_ignore_invalid_stamps.active = self.sideband.config["lxmf_ignore_invalid_stamps"]
+            self.settings_screen.ids.settings_ignore_invalid_stamps.bind(active=save_lxmf_ignore_invalid_stamps)
+
             self.settings_screen.ids.settings_lxmf_periodic_sync.active = self.sideband.config["lxmf_periodic_sync"]
             self.settings_screen.ids.settings_lxmf_periodic_sync.bind(active=save_lxmf_periodic_sync)
             save_lxmf_periodic_sync(save=False)
diff --git a/sbapp/sideband/core.py b/sbapp/sideband/core.py
index a9cb665..3f1200a 100644
--- a/sbapp/sideband/core.py
+++ b/sbapp/sideband/core.py
@@ -508,6 +508,8 @@ class SidebandCore():
             self.config["lxmf_try_propagation_on_fail"] = True
         if not "lxmf_require_stamps" in self.config:
             self.config["lxmf_require_stamps"] = False
+        if not "lxmf_ignore_invalid_stamps" in self.config:
+            self.config["lxmf_ignore_invalid_stamps"] = True
         if not "lxmf_inbound_stamp_cost" in self.config:
             self.config["lxmf_inbound_stamp_cost"] = None
         if not "notifications_on" in self.config:
@@ -746,6 +748,7 @@ class SidebandCore():
             if unpacked_config != None and len(unpacked_config) != 0:
                 self.config = unpacked_config
                 self.update_active_lxmf_propagation_node()
+                self.update_ignore_invalid_stamps()
         except Exception as e:
             RNS.log("Error while reloading configuration: "+str(e), RNS.LOG_ERROR)
 
@@ -3674,6 +3677,10 @@ class SidebandCore():
             configured_stamp_cost = self.config["lxmf_inbound_stamp_cost"]
 
         self.lxmf_destination = self.message_router.register_delivery_identity(self.identity, display_name=self.config["display_name"], stamp_cost=configured_stamp_cost)
+        if self.config["lxmf_ignore_invalid_stamps"]:
+            self.message_router.enforce_stamps()
+        else:
+            self.message_router.ignore_stamps()
         
         # TODO: Update to announce call in LXMF when full 0.5.0 support is added (get app data from LXMRouter instead)
         # Currently overrides the LXMF routers auto-generated announce data so that Sideband will announce old-format
@@ -3694,6 +3701,12 @@ class SidebandCore():
             else:
                 self.set_active_propagation_node(None)
 
+    def update_ignore_invalid_stamps(self):
+        if self.config["lxmf_ignore_invalid_stamps"]:
+            self.message_router.enforce_stamps()
+        else:
+            self.message_router.ignore_stamps()
+
     def message_notification_no_display(self, message):
         self.message_notification(message, no_display=True)
 
diff --git a/sbapp/ui/layouts.py b/sbapp/ui/layouts.py
index dc833e9..22a6263 100644
--- a/sbapp/ui/layouts.py
+++ b/sbapp/ui/layouts.py
@@ -1611,7 +1611,7 @@ MDScreen:
                     
                     MDLabel:
                         id: settings_lxmf_require_stamps_label
-                        text: "Require stamps for inbound messages"
+                        text: "Require stamps for incoming"
                         font_style: "H6"
 
                     MDSwitch:
@@ -1635,6 +1635,22 @@ MDScreen:
                         sensitivity: "all"
                         hint: False
 
+                MDBoxLayout:
+                    orientation: "horizontal"
+                    size_hint_y: None
+                    padding: [0,0,dp(24),dp(0)]
+                    height: dp(48)
+                    
+                    MDLabel:
+                        text: "Ignore messages with invalid stamps"
+                        font_style: "H6"
+
+                    MDSwitch:
+                        id: settings_ignore_invalid_stamps
+                        pos_hint: {"center_y": 0.3}
+                        disabled: False
+                        active: False
+
                 MDBoxLayout:
                     orientation: "horizontal"
                     size_hint_y: None
diff --git a/sbapp/ui/messages.py b/sbapp/ui/messages.py
index 15a08ba..7c370cb 100644
--- a/sbapp/ui/messages.py
+++ b/sbapp/ui/messages.py
@@ -152,8 +152,12 @@ class Messages():
                     valid_str = " is valid"
                 sv = msg["extras"]["stamp_value"]
                 if sv == None:
-                    sv_str = "was not included in the message"
-                    valid_str = ""
+                    if "stamp_raw" in msg["extras"]:
+                        sv_str = ""
+                        valid_str = "is not valid"
+                    else:
+                        sv_str = ""
+                        valid_str = "was not included in the message"
                 elif sv > 255:
                     sv_str = "generated from ticket"
                 else: