Hi!
It really depends on how the plugin you want to integrate with works.
Out of the box, you can transfer user metadata – which is not sufficient for anything involving different user data storage methods.
In the case leveraging user metadata is not an option, yes, you can use the documented filters linked on the main description page.
Long story short: the idea would be to create your own plugin (or use a code snippet plugin), hook into the wprus_action_data filter on the sending end, and either wprus_before_handle_action_notification or
wprus_after_handle_action_notification on the receiving end (for whether your logic needs to be executed before or after the data is processed).
Thank you for a detailed anwser. The plugin is really well coded!
Question: Do you provide customization services? We’d be happy to pay upfront for a bit of plugin customization. Since you’re the one who knows the plugin best, it would be more efficient, and we’d end up with higher-quality code.