diff --git a/basicswap/basicswap.py b/basicswap/basicswap.py
index c2043d8..61e6aa7 100644
--- a/basicswap/basicswap.py
+++ b/basicswap/basicswap.py
@@ -1151,7 +1151,7 @@ class BasicSwap(BaseApp, BSXNetwork, UIApp):
         # Scan inbox
         # TODO: Redundant? small window for zmq messages to go unnoticed during startup?
         options = {"encoding": "hex"}
-        if self._smsg_plaintext_version >= 2:
+        if self._can_use_smsg_plaintext2:
             options["pubkey_from"] = True
         ro = self.callrpc("smsginbox", ["unread", "", options])
         nm = 0
diff --git a/basicswap/network/bsx_network.py b/basicswap/network/bsx_network.py
index abb1aa6..b1c2e06 100644
--- a/basicswap/network/bsx_network.py
+++ b/basicswap/network/bsx_network.py
@@ -142,6 +142,13 @@ class BSXNetwork:
             elif network["type"] == "simplex":
                 initialiseSimplexNetwork(self, network)
 
+        self._can_use_smsg_plaintext2 = False
+        if (
+            Coins.PART in self.coin_clients
+            and self.coin_clients[Coins.PART]["core_version"] > 23020700
+        ):
+            self._can_use_smsg_plaintext2 = True
+
         if have_smsg:
             self._have_smsg_rpc = True
             if self._zmq_queue_enabled:
@@ -205,7 +212,7 @@ class BSXNetwork:
 
         # TODO: Ensure smsg is enabled for the active wallet.
 
-        if self._smsg_plaintext_version >= 2:
+        if self._can_use_smsg_plaintext2:
             self.callrpc("smsgoptions", ["set", "addReceivedPubkeys", False])
 
         now: int = self.getTime()
@@ -663,6 +670,7 @@ class BSXNetwork:
         if self._smsg_plaintext_version >= 2:
             options["plaintext_format_version"] = 2
             options["compression"] = 0
+        if self._can_use_smsg_plaintext2:
             send_to = self.getPubkeyForAddress(cursor, addr_to).hex()
         else:
             send_to = addr_to
@@ -744,7 +752,7 @@ class BSXNetwork:
 
         msg_id = message[2:]
         options = {"encoding": "hex", "setread": True}
-        if self._smsg_plaintext_version >= 2:
+        if self._can_use_smsg_plaintext2:
             options["pubkey_from"] = True
         num_tries = 5
         for i in range(num_tries + 1):
@@ -1093,7 +1101,7 @@ class BSXNetwork:
             if now - self._last_checked_smsg >= self.check_smsg_seconds:
                 self._last_checked_smsg = now
                 options = {"encoding": "hex", "setread": True}
-                if self._smsg_plaintext_version >= 2:
+                if self._can_use_smsg_plaintext2:
                     options["pubkey_from"] = True
                 msgs = self.callrpc("smsginbox", ["unread", "", options])
                 for msg in msgs["messages"]: