Can we update Jira field by email?

[William.Choo]

e.g. I reply the the email notification from jira with update Status or Components in the Jira ticket.

[Iago Docando]

Not sure about the cloud version but I'll share some thoughts on the server version that may be of help:

1. As far as I know, you can create or update issues via email and following replies.
2. The first email body will be the issue description.
3. Any reply will be added as a comment.

What could you do on top of this? You could configure an automation rule so each time the issue is commented (trigger) checks for a JQL (comment ~ XXXXX) and if so you proceed to transition the issue or edit any issue field.

You should be very careful when deciding what keywords are you going to use so the automation is not accidentally trigered with any random reply. That could be more challenging that it initially looks :P

Hope it helps