I need Issues comments history through JQL or in bulk.
Issue history can be view in the history section of an issue, but you can only see the comment was edited.
An alternative option, to get comment updates is Jira automation. Look at condition “Issue comment edited” and you can try some smart values like {{comment.body}} and {{comment.latest.body}} and send those to the email.
There is also an open feature request for this, see; JRACLOUD-80996
Or check for 3rd party options on the Atlassian Marketplace
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