While I understand there are work-arounds for capturing user testing feedback (https://big.ideas.aha.io/ideas/APP-I-464) the work-around does not effectively enable a wider set of end-user testers to quickly provide feedback results.
It would certainly be lovely to spin up "testing session" that was sent to a set of recipients (aha users or not) with a set of simple instructions on how to test (assumedly, they'd already be prepared for the testing session) and how to log the activity.
Each user would launch their own testing-session and they'd be asked to perform a test for each feature in the designated release. The user would simply have a "pass/fail" option - if they choose pass, they can log an optional comment; if they choose 'fail,' they're asked to complete a brief description.
The product owner would be able to track the testing results, similar to that of ideas (i.e. commenting, confirming/denying defect, etc) and the user would get email feedback and could contribute via email.
Please post idea comments with your use cases and any thoughts you would like to share.