Jakarta Mail 1.6.6 is a Service Release containing the following bug fixes:
E 403 Android SocketChannel workaround not working around
E 464 use EPL v2 licensed dependencies
E 456 MimeMessage.setFrom(null) fails instead of removing the header
E 461 OAuth2 POP3 Support for Microsoft
E 473 Several modules are not included in build when JDK11 is used
E 489 mime handling crashes on Android 11 debug build
E 493 javamail.providers file missing from provider jars after 1.6.5
E 505 WriteTimeoutSocket::getFileDescriptor$ support for Conscrypt
E 512 Improve code coverage in logging-mailhandler tests