diff --git a/modules/cli-module/pom.xml b/modules/cli-module/pom.xml
index 97dfb418..165c96a4 100644
--- a/modules/cli-module/pom.xml
+++ b/modules/cli-module/pom.xml
@@ -101,12 +101,6 @@
             <scope>compile</scope>
         </dependency>
 
-        <dependency><!-- support for named regex groups in Android -->
-            <groupId>com.github.tony19</groupId>
-            <artifactId>named-regexp</artifactId>
-            <version>0.2.6</version>
-        </dependency>
-
         <!-- Logging -->
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
diff --git a/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/BuilderApiToPicocliCommandsMapper.java b/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/BuilderApiToPicocliCommandsMapper.java
index b30e901e..5e35a643 100644
--- a/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/BuilderApiToPicocliCommandsMapper.java
+++ b/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/BuilderApiToPicocliCommandsMapper.java
@@ -1,7 +1,5 @@
 package org.simplejavamail.internal.clisupport;
 
-import com.google.code.regexp.Matcher;
-import com.google.code.regexp.Pattern;
 import jakarta.activation.DataSource;
 import jakarta.mail.internet.MimeMessage;
 import org.bbottema.javareflection.BeanUtils;
@@ -47,12 +45,14 @@
 import java.util.Set;
 import java.util.TreeSet;
 import java.util.UUID;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
-import static com.google.code.regexp.Pattern.compile;
 import static java.lang.String.format;
 import static java.util.Arrays.asList;
 import static java.util.EnumSet.allOf;
 import static java.util.EnumSet.of;
+import static java.util.regex.Pattern.compile;
 import static org.bbottema.javareflection.TypeUtils.containsAnnotation;
 import static org.simplejavamail.internal.util.Preconditions.assumeTrue;
 import static org.simplejavamail.internal.util.Preconditions.checkNonEmptyArgument;
diff --git a/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/therapijavadoc/TherapiJavadocHelper.java b/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/therapijavadoc/TherapiJavadocHelper.java
index d2f2fc84..74460a68 100644
--- a/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/therapijavadoc/TherapiJavadocHelper.java
+++ b/modules/cli-module/src/main/java/org/simplejavamail/internal/clisupport/therapijavadoc/TherapiJavadocHelper.java
@@ -7,7 +7,6 @@
 import com.github.therapi.runtimejavadoc.RuntimeJavadoc;
 import com.github.therapi.runtimejavadoc.SeeAlsoJavadoc;
 import com.github.therapi.runtimejavadoc.Value;
-import com.google.code.regexp.Matcher;
 import org.bbottema.javareflection.ClassUtils;
 import org.bbottema.javareflection.MethodUtils;
 import org.jetbrains.annotations.NotNull;
@@ -24,11 +23,12 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.regex.Matcher;
 
-import static com.google.code.regexp.Pattern.compile;
 import static java.lang.String.format;
 import static java.util.Arrays.asList;
 import static java.util.Optional.ofNullable;
+import static java.util.regex.Pattern.compile;
 import static org.simplejavamail.internal.clisupport.BuilderApiToPicocliCommandsMapper.colorizeDescriptions;
 import static org.simplejavamail.internal.util.ListUtil.getFirst;
 import static org.simplejavamail.internal.util.StringUtil.padRight;
@@ -185,4 +185,4 @@ public static class DocumentedMethodParam {
 		@NotNull public String getName() { return name; }
 		@NotNull public String getJavadoc() { return javadoc; }
 	}
-}
\ No newline at end of file
+}
diff --git a/modules/core-module/pom.xml b/modules/core-module/pom.xml
index 61665c46..f73c1cf4 100644
--- a/modules/core-module/pom.xml
+++ b/modules/core-module/pom.xml
@@ -47,11 +47,5 @@
             <version>0.13.0</version>
             <scope>provided</scope><!-- makes library mandatory if we should support CLI (even optionally) -->
         </dependency>
-
-        <dependency><!-- support for named regex groups in Android -->
-            <groupId>com.github.tony19</groupId>
-            <artifactId>named-regexp</artifactId>
-            <version>0.2.6</version>
-        </dependency>
     </dependencies>
 </project>
diff --git a/modules/core-module/src/main/java/org/simplejavamail/api/email/EmailPopulatingBuilder.java b/modules/core-module/src/main/java/org/simplejavamail/api/email/EmailPopulatingBuilder.java
index 31080058..9c57762a 100644
--- a/modules/core-module/src/main/java/org/simplejavamail/api/email/EmailPopulatingBuilder.java
+++ b/modules/core-module/src/main/java/org/simplejavamail/api/email/EmailPopulatingBuilder.java
@@ -1,6 +1,5 @@
 package org.simplejavamail.api.email;
 
-import com.google.code.regexp.Pattern;
 import jakarta.activation.DataSource;
 import jakarta.mail.Message;
 import jakarta.mail.internet.InternetAddress;
@@ -21,8 +20,9 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
+import java.util.regex.Pattern;
 
-import static com.google.code.regexp.Pattern.compile;
+import static java.util.regex.Pattern.compile;
 
 
 /**
@@ -1658,4 +1658,4 @@ public interface EmailPopulatingBuilder {
 	 */
 	@Nullable
 	Date getSentDate();
-}
\ No newline at end of file
+}
diff --git a/modules/core-module/src/main/java/org/simplejavamail/config/ConfigLoader.java b/modules/core-module/src/main/java/org/simplejavamail/config/ConfigLoader.java
index 9fbf8a3a..a4ea676b 100644
--- a/modules/core-module/src/main/java/org/simplejavamail/config/ConfigLoader.java
+++ b/modules/core-module/src/main/java/org/simplejavamail/config/ConfigLoader.java
@@ -1,7 +1,5 @@
 package org.simplejavamail.config;
 
-import com.google.code.regexp.Matcher;
-import com.google.code.regexp.Pattern;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.simplejavamail.api.mailer.config.LoadBalancingStrategy;
@@ -19,9 +17,11 @@
 import java.util.Map;
 import java.util.Properties;
 import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
-import static com.google.code.regexp.Pattern.compile;
 import static java.util.Collections.unmodifiableMap;
+import static java.util.regex.Pattern.compile;
 import static org.simplejavamail.internal.util.MiscUtil.checkArgumentNotEmpty;
 import static org.simplejavamail.internal.util.MiscUtil.valueNullOrEmpty;
 import static org.simplejavamail.internal.util.Preconditions.assumeTrue;
@@ -455,4 +455,4 @@ static Object parsePropertyValue(final @Nullable String propertyValue) {
 		// return value as is (which should be string)
 		return propertyValue;
 	}
-}
\ No newline at end of file
+}
diff --git a/modules/core-module/src/main/java/org/simplejavamail/internal/util/StringUtil.java b/modules/core-module/src/main/java/org/simplejavamail/internal/util/StringUtil.java
index c5eea2c1..c196cdf0 100644
--- a/modules/core-module/src/main/java/org/simplejavamail/internal/util/StringUtil.java
+++ b/modules/core-module/src/main/java/org/simplejavamail/internal/util/StringUtil.java
@@ -1,11 +1,12 @@
 package org.simplejavamail.internal.util;
 
-import com.google.code.regexp.Matcher;
-import com.google.code.regexp.Pattern;
 import org.jetbrains.annotations.NotNull;
 
-import static com.google.code.regexp.Pattern.compile;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 import static java.lang.String.format;
+import static java.util.regex.Pattern.compile;
 import static java.util.regex.Pattern.quote;
 import static org.simplejavamail.internal.util.Preconditions.assumeTrue;
 
diff --git a/modules/simple-java-mail/src/main/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl.java b/modules/simple-java-mail/src/main/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl.java
index 4fac0a0e..142565ca 100644
--- a/modules/simple-java-mail/src/main/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl.java
+++ b/modules/simple-java-mail/src/main/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl.java
@@ -1,6 +1,5 @@
 package org.simplejavamail.email.internal;
 
-import com.google.code.regexp.Matcher;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import jakarta.activation.DataSource;
 import jakarta.mail.Message.RecipientType;
@@ -41,6 +40,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.regex.Matcher;
 
 import static jakarta.mail.Message.RecipientType.BCC;
 import static jakarta.mail.Message.RecipientType.CC;
@@ -2475,4 +2475,4 @@ public X509Certificate getX509CertificateForSmimeEncryption() {
 	public Date getSentDate() {
 		return sentDate != null ? new Date(sentDate.getTime()) : null;
 	}
-}
\ No newline at end of file
+}
diff --git a/modules/simple-java-mail/src/test/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl1Test.java b/modules/simple-java-mail/src/test/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl1Test.java
index a374b547..54972dda 100644
--- a/modules/simple-java-mail/src/test/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl1Test.java
+++ b/modules/simple-java-mail/src/test/java/org/simplejavamail/email/internal/EmailPopulatingBuilderImpl1Test.java
@@ -1,7 +1,5 @@
 package org.simplejavamail.email.internal;
 
-import com.google.code.regexp.Matcher;
-import com.google.code.regexp.Pattern;
 import jakarta.activation.DataSource;
 import jakarta.mail.Message;
 import jakarta.mail.internet.InternetAddress;
@@ -34,6 +32,8 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import static demo.ResourceFolderHelper.determineResourceFolder;
 import static jakarta.mail.Message.RecipientType.BCC;
@@ -1405,4 +1405,4 @@ public String getName() {
 			return "dummy";
 		}
 	}
-}
\ No newline at end of file
+}