The biggest problem with the onsite email (Private messages) is finding something that you have sent to someone. There is no search feature in email and you can't set it to just show a conversation between you and a member. I used a module for Dolphin that helped a lot that showed just the dialogue between you and a particular member. https://www.boonex.com/m/dialogs
That's a really good feature and something I'd missed until now. Sadly I won't be purchasing anything else from Anton. He's lost interest in Dolphin and his once impeccable service is now deplorable.