@GossiTheDog and boy howdy are those products full of red flags.
For example:
https://www.smarsh.com/platform/enterprise/conduct
"Supervise[s] more than 100 communication channels (including audio and video)"
So it's not so much 'archiving' as 'spyware' where everything is being dumped into S3 buckets by people with ... *questionable* security practices.