Email on activation of new accounts?

[metalappie]

I'd really like to send all new members an email saying their account is activated. I saw there's a plugin (link here) but after I installed and activated it I received error messages. I think the plugin in question isn't compatible with MyBB 1.2.10, so I was wondering if anybody is planning on making this plugin compatible with MyBB 1.2.10? Or knows about another plugin that does the same thing? And is compatible with MyBB 1.2.10?

Thanks in advance.