Most Complicated Drupal Modules

Hi,
I just want to implement an email-driven ticketing system. Since MailComment is using Message Notify, I've been painfully reading through Message Stack. As a site builder, the documentation looks super daunting as you need to manually code for Sending Notification Messages, Message Subscribe Module, Creating Message Instances along with the in-depth know-hows of lots of parameters

Earlier, I successfully used Rules & Conditional Rules Modules to automate lots of tasks easily without a single line of code, namely auto new user account, new node, new comment and emailing based on various conditions, what a happy journey.

However, this Message Stack really drives me mad, especially the Message Notify & Message Subscribe as stated above, partly via Interface, partly writing codes, absolutely not straight-forward.

I don't know if I can use Rules with MailComment totally bypassing Message Stack which isn't user-friendly for site builders. My requirement is simple as follows.

1.) User sends in support email (done)

2.) Mailhandler auto creates support node as well as new user account (done)

3.) Notify admin via email (still figuring out MailComment with Message Stack, too complicated, I really want to completely bypass Message Stack if there're alternatives)

4.) Admin replies via email

5.) Notify user via email

6.) User replies via email

7.) The entire communication thread is kept under Support Node & its Comments.