Consider opening a support issue with Atlassian.
This can happen due to misconfiguration of the server or if your email provider is throttling your emails. It has several causes, but this is not usually a 'JIRA' problem per say. JIRA normally sends emails immediately. I suspect JIRA is sending them normally and they are getting caught up elsewhere.
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot