ITSM Emailed Request - Adding additional email recipients

Question

When an emailed request comes in, currently only the sender of the email is added as the reporter on the ticket. I want to have all the other recipients added to a custom field so that they are included in the notification chain as updates are made. I have already created a multiple user custom field but where do I tell Jira to map the other recipients to the custom field?

*Edit

I found the setting to allow follow up emails that contain the same key to be added as a comment which resolved part of the issue (Gear icon - Products -Configuration - "Allow all emails that contain a valid issue key to be added as a comment to the issue"). When responses to the ticket are made these additional commenters are not copied on the responses though.

Brant Schroeder · Accepted Answer

@ST Support How are your customer permissions set up?  If the service management project is open to all customers the customers should be added as request participants.  If this is occurring then you need to check the customer notifications and see if they are going to just the reporter or all customers involved.  You should also make sure that different customer communications are enabled.