Ability to edit notification when a new user/customer joins a site

When configuring the user access settings to allow approved domains to access a site, admins will receive the following notification:

<User name> has joined yoursite
Hi <Admin name>,

<User name> (user@domain.com) has just joined https://yoursite.atlassian.net in yoursite. They have access to the following products:

Jira Service Management
Jira Software

View <User name> profile

If something doesn’t look right, review your user access settings.
Cheers,
The Atlassians

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It would be great if admins could have the ability to edit the subject and further details of the notification.