How to delete accounts of users who have been inactive for 90 days ?

I think you have to combine two things:

- Con job →
- View filter by users who were online last time

As far as the cron job is concerned, in ECA (ECA Base Submodule) there is the event ECA Cron Event, which is fired when a certain cron has run.

You can use the cron job to execute a view (ECA Execute query) and process the data obtained from it as two individual workflows:

- Send a message that states that the account will be deleted in X amount of time (I can recommend the Message stack → for this. The documentation → is a little outdated, but the message stack is pretty straight forward)

- Delete the account and its content by sending a message to the user.

I think that would be a good approach that you could try.

Missing feedback.