grails 2 different dependencies with same package names

Some dependencies from various libraries have same package name javax.mail. And all the classes inside them are equal with different versions.

I want to be able to choose which class to load at runtime. To be more specific, I have MimeMessage class for email and right now the program is choosing the old version rather than the newer version so this field protected InternetHeaders headers; is not correctly filled and the charset for email and subject is not added so I am unable to send mail with html body.
jar file names :

javax.mail-1.6.2.jar
geronimo-javamail_1.4_spec-1.2.jar
javax.mail-1.5.1.jar
javax.mail-api-1.5.1.jar

all of them have javax.mail.internet.MimeMessage

You may wanna try to

• Exclude the conflicting dependency

dependencies {
    compile('org.example:conflict-library:1.0') {
        excludes 'geronimo-javamail_1.4_spec'
    }
}

• Use dependency management

dependencyManagement {
    imports {
        mavenBom 'org.example:bom:1.0'
    }
    dependencies {
        dependency 'javax.mail:mail:1.6.2'
    }
}

forcing all dependencies on javax.mail:mail to use version 1.6.2

PS: remember to clean and rebuild your project after modifying