Deleting notifications

In an Elgg in production one of the main problems is notifications.

I have only 700 users but notifications accumulate by tens of thousands.

I have not been able to find a tool that allows me to delete these notifications or an application that allows me to delete them automatically by expiration date (cron), for example.

Can someone develop a plugin to solve this problem? Professional paid service, of course.

Thanks, Wogker.