Hello Pipedrivers!

I really like to use my inbox on Pipedrive, and to know when an email was sent, or a link clicked.
However, I get the impression that this feature is still being tested because;

-not read reports
-not fully integrated with automations

So I would like to know which Pipedrive integrations you know that most help in the process of cold mails, business intelligence and task automation with emails.