Our process for candidate feedback after an interview:
1/ Before they interview, check how the candidate would like us to give them feedback - call, email, text etc.
2/ Ask them to call us after the interview with their own feedback of how it went.
3/ Email employer with candidate feedback immediately, to confirm interest, clarify any potential misunderstanding and mitigate any problems.
4/ Gain employer feedback on the candidate, as agreed at the outset of any recruitment project.
5/ Contact candidate as agreed with feedback and / or next steps.
That's it.