I have noticed streams of emails between developers about JIRA issues, where there is information in the emails that should really be captured in issue comments. On investigation I have found that emails are used when someone wants to attract someone else's attention to their issue for information or advice. Having sent such an email the conversation continues in the email medium and the information from that conversation is not properly captured.
Is there some sort of mechanism in JIRA to attract someone's attention to an issue comment via an alert or something?