Hi, here is my pom part:

<dependency>
            <groupId>org.simplejavamail</groupId>
            <artifactId>simple-java-mail</artifactId>
            <version>6.0.4</version>
</dependency>

module-info:

requires org.simplejavamail;
requires org.simplejavamail.core;

and app code:

 Email email = EmailBuilder.startingBlank()
            .from(mailerJob.getFromName(), mailerJob.getFromAddr())
            .to(mailerJob.getToAddr())
            .withSubject(mailerJob.getSubject())
            .withPlainText(mailerJob.getText())
            .buildEmail();

when try to compile application an error occurred:

module 'bla bla' reads package org.simplejavamail.internal.modules from both org.simplejavamail.core and org.simplejavamail

If remove (1) 'requires org.simplejavamail.core;' or (2) 'requires org.simplejavamail;' from module-info another error occuring:

for (1): package org.simplejavamail.api.email is not visible
for (2) package org.simplejavamail.mailer is not visible

It seams something wrong with the package exporting in simplejavamail jpms modules