Our company uses gmail and have addresses on the form firstname.lastname@xxx.com which are used when setting up their Jira account.
But we also have a short-version of the email with is only firstname@xxx.com, and for some reason Jira (I think) is automatically creating accounts with the short version of the emails, so people end up with double accounts. My guess is that this is through some mention or email automation, since both emails are connected to the same gmail account.
Any ideas on how to turn this off? Or if I can see in Jira admin how the extra accounts were created? (now I just get an email saying xxx has join Jira Software, but not how they were added).