diff --git a/powerbell/build.gradle b/powerbell/build.gradle
index 654eec0..8204a04 100644
--- a/powerbell/build.gradle
+++ b/powerbell/build.gradle
@@ -84,7 +84,7 @@ dependencies {
     //api 'androidx.fragment:fragment:1.1.0'
     
 	// WinBoLL库 nexus.winboll.cc 地址
-	api 'cc.winboll.studio:libaes:15.20.20'
+	api 'cc.winboll.studio:libaes:15.20.21'
     api 'cc.winboll.studio:libappbase:15.20.34'
 	
 	// WinBoLL备用库 jitpack.io 地址
diff --git a/powerbell/build.properties b/powerbell/build.properties
index 8a46448..0b38e4e 100644
--- a/powerbell/build.properties
+++ b/powerbell/build.properties
@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Sat Jul 18 03:20:45 CST 2026
-stageCount=21
+#Sat Jul 18 04:11:00 CST 2026
+stageCount=22
 libraryProject=
 baseVersion=15.15
-publishVersion=15.15.20
+publishVersion=15.15.21
 buildCount=0
-baseBetaVersion=15.15.21
+baseBetaVersion=15.15.22
diff --git a/powerbell/proguard-rules.pro b/powerbell/proguard-rules.pro
index 748e2a7..f87b1f2 100644
--- a/powerbell/proguard-rules.pro
+++ b/powerbell/proguard-rules.pro
@@ -60,6 +60,22 @@
 -dontwarn java.util.function.**
 
 # ============================== 第三方框架专项规则 ==============================
+# JavaMail / SMTP 邮件发送（APPMSGMailUtils 依赖，防止 R8 混淆导致 SMTP 发送失败）
+-keep class javax.mail.** { *; }
+-keep class javax.mail.internet.** { *; }
+-keep class javax.activation.** { *; }
+-keep class com.sun.mail.** { *; }
+-keep class com.sun.mail.util.** { *; }
+-keep class com.sun.mail.smtp.** { *; }
+-keep class com.sun.mail.pop3.** { *; }
+-keep class com.sun.mail.imap.** { *; }
+-dontwarn javax.mail.**
+-dontwarn javax.activation.**
+-dontwarn com.sun.mail.**
+-dontwarn java.awt.**
+-dontwarn javax.naming.**
+-dontwarn javax.net.ssl.**
+
 # OkHttp 4.4.1（米盟广告请求依赖，完善Lambda兼容）
 -keep class okhttp3.** { *; }
 -keep interface okhttp3.** { *; }