diff --git a/.gitignore b/.gitignore
index 3953003..79e44c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 .venv/
 __pycache__/
 *.pyc
-config.yaml
+config.json
 data/
diff --git a/src/email_client.py b/src/email_client.py
index 873ecad..917593b 100644
--- a/src/email_client.py
+++ b/src/email_client.py
@@ -91,12 +91,13 @@ def _select_mailbox(conn, mailbox: str = "INBOX"):
 
 
 def _login_and_prepare(account: EmailAccount, timeout: int = 30, select_inbox: bool = True):
-    logger.info("连接 %s:%d (超时%ds)", account.imap_server, account.imap_port, timeout)
-    if account.use_ssl:
-        conn = imaplib.IMAP4_SSL(account.imap_server, account.imap_port, timeout=timeout)
+    imap = account.imap
+    logger.info("连接 %s:%d (超时%ds)", imap.server, imap.port, timeout)
+    if imap.ssl:
+        conn = imaplib.IMAP4_SSL(imap.server, imap.port, timeout=timeout)
     else:
-        conn = imaplib.IMAP4(account.imap_server, account.imap_port, timeout=timeout)
-        if account.use_starttls:
+        conn = imaplib.IMAP4(imap.server, imap.port, timeout=timeout)
+        if imap.starttls:
             conn.starttls()
     conn.login(account.username, account.password)
     logger.info("登录成功: %s", account.username)
diff --git a/src/smtp_client.py b/src/smtp_client.py
index 40f66ff..b10a49f 100644
--- a/src/smtp_client.py
+++ b/src/smtp_client.py
@@ -23,12 +23,12 @@ def send_reply(account: EmailAccount, to_addr: str, subject: str, body: str,
         raise RuntimeError(f"账号 {account.username} 未配置 SMTP")
 
     s = account.smtp
-    logger.info("SMTP 连接: %s:%d (ssl=%s)", s.server, s.port, s.use_ssl)
-    if s.use_ssl:
+    logger.info("SMTP 连接: %s:%d (ssl=%s)", s.server, s.port, s.ssl)
+    if s.ssl:
         conn = smtplib.SMTP_SSL(s.server, s.port, timeout=15)
     else:
         conn = smtplib.SMTP(s.server, s.port, timeout=15)
-        if s.use_starttls:
+        if s.starttls:
             conn.starttls()
 
     conn.login(account.username, account.password)
diff --git a/src/tg_bot.py b/src/tg_bot.py
index 774ee44..65b2e7f 100644
--- a/src/tg_bot.py
+++ b/src/tg_bot.py
@@ -659,7 +659,11 @@ def _extract_media(msg: dict) -> list[dict]:
 def _do_send_reply(bot_token: str, cfg: Config,
                    chat_id: int, msg_id: int, ctx: dict, reply_text: str,
                    attachments: list[dict] | None = None):
-    acct = cfg.email_accounts[ctx["account_idx"]]
+    user = find_user_by_chat_id(cfg, chat_id)
+    if not user:
+        send_text(bot_token, str(chat_id), "❌ 用户未找到。")
+        return
+    acct = user.email_accounts[ctx["account_idx"]]
     if not acct.smtp:
         send_text(bot_token, str(chat_id), "❌ 该邮箱未配置 SMTP，无法发送回复。")
         return