Symptoms

Images are not showing in JIRA email notifications. See screenshot for example:

Cause

This could be caused by a session token of JIRA that is not available to the email client, causing the referenced image URL to not be downloaded with the message.

There is a bug ticket filed for tracking the progress of this issue here:  JRA-41675 - Getting issue details... STATUS

Resolution

1. View the email message source
2. Find a img tag in the source similar to http://base.url/secure/useravatar?ownerId=username&avatarId=10200

3. Paste this URL into a browser and see if you are able to view the image

4. If you are asked to authenticate in JIRA, there may be a missing session token causing the missing images in the email notification.
5. Please try logging into JIRA and see if the remediates the issue