Use AUTHENTICATE PLAIN instead of LOGIN

README.md

@@ -1,6 +1,12 @@
 # ⛔️ DEPRECATED
 
-This feature has been integrated into Radicale as of version 3.4.1.
+RadicaleIMAP has been integrated into Radicale as of version 3.4.1.
+
+This fork was created to support UTF-8 in IMAP authentication, and
+the commit for that was merged to Radicale 3.5.0.
+
+So this repo here is of use to you only if you need Radicale version
+3.4.0 or less. It will conflict with Radicale 3.4.1.
 
 # Radicale IMAP
 

radicale_imap/__init__.py

@@ -71,7 +71,10 @@ def login(self, login, password):
                 if security == "starttls":
                     connection.starttls(ssl.create_default_context())
             try:
-                connection.login(login, password)
+                connection.authenticate(
+                    "PLAIN",
+                    lambda _: "{0}\x00{0}\x00{1}".format(login, password).encode()
+                )
             except imaplib.IMAP4.error as e:
                 logger.debug(
                     "IMAP authentication failed: %s", e, exc_info=True)