Ability to extract fields from email and or comments for storage in issue fields

A use case:

Customer would like to be able to update Jira fields (for example worklog) by sending an email that will contain the fields data.

It will be great if A4J is able to parse and extract the field data from a body of an email or a comment and update the fields accordingly

An extended functionality would be to extract the same values even from any comments added (for example, via REST API)