Hi everybody.
I am having an issue about email notifications in JSM when customers can mail requests.
My client's customers get that email when sending a request :
Subject: [Action required] Validate your email address to complete your registration to jiraXXXXX.atlassian.net
In order to send your request for jiraXXXXX.atlassian.net, please validate your e-mail address. For reasons of confidentiality and security, please do not share this link with anyone.
Confirm your e-mail address
Your Atlassian account
(roughly translated from french)
Where can I deactivate that type of email (if I can) ? I found a parameter (see capture, but I am not sure).

Thanks in advance.