yProvider extends Provider {
     public MyProvider() {
         super(Provider.Type.STORE, "myprot", MyStore.class.getName(),
             "Example", null);
     }
 }
 </pre>
 Then include a file named <code>META-INF/services/jakarta.mail.Provider</code>
 in your jar file that lists the name of your Provider class:
 <pre>
 com.example.MyProvider
 </pre>
 <p>

 <b><code>javamail.address.map</code></b> and
 <b><code>javamail.default.address.map</code></b><p>

 These resource files map transport address types