Difference between MailServiceUtil.sendEmail() and MailEngine.send()

Question

Which of these methods is recommended?

Is any one of these methods outdated?

Do both use internally auth properties set in the portal?

I read the source for both methods, and while MailEngine is a high level abstraction of typical transport, send functionality, etc; MailLocalService uses beanLocator for an external Service.

Which one is that?

Answer 1

MailEngine is in util-java.jar, in Liferay's WEB-INF/lib, so you can't access it from your plugins (other than ext-plugin). For this reason consider it an implementation detail with no guaranteed or implied stability.

MailServiceUtil is the API service front-end class. This is part of the API and you can reasonably expect it to be quite stable. And you can use it from your plugins as well.