优化：邮件发送支持多个收件人（以半角逗号,分隔）

app/src/main/java/com/idormy/sms/forwarder/sender/SenderMailMsg.java

@@ -8,6 +8,9 @@ import com.idormy.sms.forwarder.utils.SettingUtil;
 import com.smailnet.emailkit.Draft;
 import com.smailnet.emailkit.EmailKit;
 
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 import io.reactivex.rxjava3.core.Observable;
@@ -35,12 +38,15 @@ public class SenderMailMsg extends SenderBaseMsg {
                                 .setAccount(fromEmail)             //发件人邮箱
                                 .setPassword(pwd);                 //密码或授权码
 
+                        //多个收件人邮箱
+                        Set<String> toSet = new HashSet<>(Arrays.asList(toAdd.replace("，", ",").split(",")));
+
                         //设置一封草稿邮件
                         Draft draft = new Draft()
                                 .setNickname(nickname)   //发件人昵称
-                                .setTo(toAdd)                  //收件人邮箱
-                                .setSubject(title)             //邮件主题
-                                .setText(content);             //邮件正文
+                                .setTo(toSet)            //收件人邮箱
+                                .setSubject(title)       //邮件主题
+                                .setText(content);       //邮件正文
 
                         //使用SMTP服务发送邮件
                         EmailKit.useSMTPService(config)

app/src/main/res/layout/alert_dialog_setview_email.xml

@@ -242,27 +242,42 @@
 
         <LinearLayout
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:layout_marginLeft="10dp"
-            android:layout_marginRight="10dp"
-            android:orientation="horizontal">
+            android:layout_height="wrap_content"
+            android:layout_marginStart="10dp"
+            android:layout_marginEnd="10dp"
+            android:layout_marginTop="5dp"
+            android:background="@android:color/white"
+            android:gravity="center_vertical"
+            android:orientation="vertical">
 
-            <TextView
-                android:layout_width="wrap_content"
+            <LinearLayout
+                android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:text="@string/email_to" />
+                android:orientation="horizontal">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/email_to" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="5dp"
+                    android:text="@string/email_to_tips"
+                    android:textSize="11sp" />
+            </LinearLayout>
 
             <EditText
                 android:id="@+id/editTextEmailToAdd"
-                android:layout_width="wrap_content"
+                android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_marginStart="3dp"
                 android:autofillHints=""
-                android:ems="14"
-                android:inputType="textEmailAddress"
-                android:maxLines="1"
+                android:inputType="text"
+                android:gravity="start|top"
+                android:minLines="1"
                 android:text=""
-                tools:ignore="LabelFor" />
+                tools:ignore="LabelFor,TextFields" />
         </LinearLayout>
 
         <LinearLayout

app/src/main/res/values-en/strings.xml

@@ -132,6 +132,7 @@
     <string name="email_password">Password/Auth Code</string>
     <string name="email_nickname">Nickname</string>
     <string name="email_to">Send To</string>
+    <string name="email_to_tips">Tip：Separate multiple recipients with a semicolon comma</string>
     <string name="email_title">Email Title</string>
     <string name="feishu_webhook">Webhook</string>
     <string name="feishu_secret">Secret (optional)</string>

app/src/main/res/values/strings.xml

@@ -132,6 +132,7 @@
     <string name="email_password">登录密码/授权码</string>
     <string name="email_nickname">发件人昵称</string>
     <string name="email_to">收件地址</string>
+    <string name="email_to_tips">Tip：多个收件人以半角逗号,分隔</string>
     <string name="email_title">邮件主题</string>
     <string name="feishu_webhook">Webhook 地址</string>
     <string name="feishu_secret">加签 Secret (没有可不填)</string>