In JIRA6 with the 'Create a new issue from each email message' mail handler it is possible to append the sender to the description field ("When an issue is created and this option is specified, the email message's From: field address is appended in a brief message at the end of the issue's Description field, so that the sender can be identified.").
I wonder if it is possible to achieve the same when adding comment from email.
It should be possible with external plugin Enterprise Mail Handler (JEMH) (https://marketplace.atlassian.com/plugins/com.javahollic.jira.jemh-ui)
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