Data retention on triggered alerts and sent e-mails

[SocMin]

I've been asked to find a solution that will allow me to retain the full details of triggered alerts and the e-mail alerts sent by them.

So far I cannot see any clear way to do this bar perhaps outputting the requested details to a lookup and just copying to a retention mailbox appears to also not be an option.

Has anyone had to meet this kind of retention policy before?

[richgalloway]

Could you explain the use case in more detail, please?  How long is the retention period?  Where does the data need to be retained?  What exactly needs to be retained?  Why is a retention mailbox not an option?