diff --git a/Mailnag/backends/imap.py b/Mailnag/backends/imap.py
index 91ecd66..f6e74dd 100644
--- a/Mailnag/backends/imap.py
+++ b/Mailnag/backends/imap.py
@@ -148,7 +148,7 @@ def mark_as_seen(self, mails):
 						if folder != last_folder:
 							conn.select(f'"{folder}"', readonly = False)
 							last_folder = folder
-						status, data = conn.uid("STORE", m.flags['uid'], "+FLAGS", "(\Seen)")
+						status, data = conn.uid("STORE", m.flags['uid'], "+FLAGS", r"(\Seen)")
 					except:
 						logging.warning("Failed to set mail with uid %s to seen on server (account: '%s').", m.flags['uid'], acc.name)
 
diff --git a/Mailnag/common/imaplib2.py b/Mailnag/common/imaplib2.py
index dfce0b4..70fa8d3 100644
--- a/Mailnag/common/imaplib2.py
+++ b/Mailnag/common/imaplib2.py
@@ -309,6 +309,7 @@ def __init__(self, host=None, port=None, debug=None, debug_file=None, identifier
         self.compressor = None          # COMPRESS/DEFLATE if not None
         self.decompressor = None
         self._tls_established = False
+        self._ssl_context = None
 
         # Create unique tag for this session,
         # and compile tagged response matcher.
@@ -492,7 +493,13 @@ def ssl_wrap_socket(self):
 
             ssl_version =  TLS_MAP[self.tls_level][self.ssl_version]
 
-            self.sock = ssl.wrap_socket(self.sock, self.keyfile, self.certfile, ca_certs=self.ca_certs, cert_reqs=cert_reqs, ssl_version=ssl_version)
+            self._ssl_context = ssl.SSLContext(ssl_version)
+            self._ssl_context.verify_mode = cert_reqs
+            if self.ca_certs:
+                self._ssl_context.load_verify_locations(self.ca_certs)
+            if self.keyfile and self.certfile:
+                self._ssl_context.load_cert_chain(self.certfile, self.keyfile)
+            self.sock = self._ssl_context.wrap_socket(self.sock, server_hostname=self.host)
             ssl_exc = ssl.SSLError
             self.read_fd = self.sock.fileno()
         except ImportError:
@@ -2459,7 +2466,7 @@ def ParseFlags(resp):
     ('select', ('imaplib2_test2',)),
     ('search', (None, 'SUBJECT', '"IMAP4 test"')),
     ('fetch', ('1:*', '(FLAGS INTERNALDATE RFC822)')),
-    ('store', ('1', 'FLAGS', '(\Deleted)')),
+    ('store', ('1', 'FLAGS', r'(\Deleted)')),
     ('namespace', ()),
     ('expunge', ()),
     ('recent', ()),
@@ -2564,7 +2571,7 @@ def run(cmd, args, cb=True):
             if not uid: continue
             run('uid', ('FETCH', uid[-1],
                     '(FLAGS INTERNALDATE RFC822.SIZE RFC822.HEADER RFC822.TEXT)'))
-            run('uid', ('STORE', uid[-1], 'FLAGS', '(\Deleted)'))
+            run('uid', ('STORE', uid[-1], 'FLAGS', r'(\Deleted)'))
             run('expunge', ())
 
         if 'IDLE' in M.capabilities:
@@ -2578,10 +2585,10 @@ def run(cmd, args, cb=True):
             dat = run('fetch', (num, '(FLAGS INTERNALDATE RFC822)'), cb=False)
             M._mesg('fetch %s => %s' % (num, repr(dat)))
             run('idle', (2,))
-            run('store', (num, '-FLAGS', '(\Seen)'), cb=False),
+            run('store', (num, '-FLAGS', r'(\Seen)'), cb=False),
             dat = run('fetch', (num, '(FLAGS INTERNALDATE RFC822)'), cb=False)
             M._mesg('fetch %s => %s' % (num, repr(dat)))
-            run('uid', ('STORE', num, 'FLAGS', '(\Deleted)'))
+            run('uid', ('STORE', num, 'FLAGS', r'(\Deleted)'))
             run('expunge', ())
             if idle_intr:
                 M._mesg('HIT CTRL-C to interrupt IDLE')
diff --git a/Mailnag/common/plugins.py b/Mailnag/common/plugins.py
index d9bf572..be5ed31 100644
--- a/Mailnag/common/plugins.py
+++ b/Mailnag/common/plugins.py
@@ -17,7 +17,8 @@
 #
 
 import os
-import imp
+import importlib.util
+import importlib.machinery
 import inspect
 import logging
 from enum import Enum
@@ -255,22 +256,30 @@ def _load_plugin_types():
 			for f in os.listdir(path):
 				mod = None
 				modname, ext = os.path.splitext(f)
+				filename = os.path.join(path, f)
 				
 				try:
 					if ext.lower() == '.py':
-						if not os.path.exists(os.path.join(path, modname + '.pyc')):
-							mod = imp.load_source(modname, os.path.join(path, f))
+						loader = importlib.machinery.SourceFileLoader(modname, filename)
 					elif ext.lower() == '.pyc':
-						mod = imp.load_compiled(modname, os.path.join(path, f))
-				
-					if mod != None:
-						for t in dir(mod):
-							t = getattr(mod, t)
-							if inspect.isclass(t) and \
-								(inspect.getmodule(t) == mod) and \
-								issubclass(t, Plugin):
-								plugin_types.append((modname, t))
-						
+						loader = importlib.machinery.SourcelessFileLoader(modname, filename)
+					else:
+						continue
+
+					spec = importlib.util.spec_from_file_location(modname, filename, loader=loader)
+
+					if spec is None:
+						continue
+
+					mod = importlib.util.module_from_spec(spec)
+					loader.exec_module(mod)
+
+					for attr_name in dir(mod):
+						attr = getattr(mod, attr_name)
+						if not inspect.isclass(attr):
+							continue
+						if issubclass(attr, Plugin) and attr != Plugin:
+							plugin_types.append((modname, attr))
 				except:
 					logging.exception("Error while opening plugin file '%s'" % f)
 		
diff --git a/Mailnag/configuration/configwindow.py b/Mailnag/configuration/configwindow.py
index bc7799d..9ee2d05 100644
--- a/Mailnag/configuration/configwindow.py
+++ b/Mailnag/configuration/configwindow.py
@@ -245,7 +245,12 @@ def _create_autostart(self):
 		if not os.path.exists(autostart_folder):
 			os.makedirs(autostart_folder)
 
-		shutil.copyfile(src, dst)
+		try:
+			shutil.copyfile(src, dst)
+		except Exception as e:
+			import logging
+			logging.info(f"failed setting autostart: {e}")
+			return
 		
 		# If mailag-config was started from a local directory, 
 		# patch the exec path of the autostart .desktop file accordingly.