Bounce handling is broken on my site, and so I'm trying to clean my list through several steps.
I'd like to get a list of users who have not opened any mailings in the recent past (say six months).
I keep getting a server error 500 when I try to use the advanced search > mailings tab. But also I suspect that this search will simply give me a list of all contacts who have ever failed to open an email in the recent past, as opposed to the contacts who have never opened any emails.
Is there a way to do this?