We have an active customer community with 25K+ users. These users are in many Chatter groups and as a result receive Chatter digests and notifications via email. About 300+ emails bounce back per week, from Chatter notifications sent to these users and we would like to automatically Freeze these users.
I know Salesforce has a bounce management feature for email deliverability but I believe it is only for contact or lead sent an email by workflow or apex. According to the docs, this doesn't cover community users.
I could also implement an email handler on my inbox that receives the bounces and implement some logic for freezing these users.
Is there a record created for these Chatter notification bounces that I could use to manage this in a batch job?
Any other possible solutions I'm not considering?