Register Extra tabular data per user

I would like to add extra tabular data to existing users. This is to keep track of a history of emails and a history of payments
I know we could use CB Subs for this, but we have a working solution for online sales.
I only want to keep track of the history of emails and payments per user.
What would be a recommended way of doing this ?

I know that I could write my own plugin to CB for this, but I can't imagine that someone else hasn't already created something like this

Robert

History of emails from what? History of payments from what? CB Auto Actions can certainly log information to a custom database or fields, but it really depends on from what. CB Auto Actions acts on triggers so whatever you're using to send emails or handle payments would need triggers for it to act on.

Kyle,
We have a subscriber system for contents on our website.
We would like to register emails that were send to subscribers and register their payments.
We can probably also do that with Cb Subs but we will not use the built in payment options, since we have our own online sales system already and we do not want to change that.
We just want to register that a customer has renewed with the date and amount paid.
Or is this all very easy to do with Cb Subs (in other words, can I use Cb Subs without the payment options and enter transactions manually).

Robert

Without a CB trigger or Joomla event CB Auto Actions won't be of any help here. So if your custom system has either then you'd just use CB Auto Actions to send emails or log information to a custom database table, etc.. Beyond that I suggest just implementing the functionality you need in your custom payment system.