XF 2 Action writes a post?

[Robert9]

Do we have any add-on that writes a post to a specified thread, when something is happen?


This add-in for example writes a new thread to a specified forum, when contact form is used:

[OzzModz] Contact Us Thread

When the Contact Us form is used, this add-on will create a thread in a specified forum. Associates the thread ownership with the logged in user or as a guest user, and uses a phrase to format the message contents. Notice: The Contact Us flood...

xenforo.com

But I need an add-on that writes a post instead. Do we have anything like that?
I just want to see how it is done.

 

[Robert9]

I remember that we had some add-ons for XF1 that writes post to a special thread, when something is happen.
But after searching through hundreds and hundreds of add-ons, it seems there is none for XF2.
Alerts, pm, mails or new threads, but no posts, are used to inform people.