Right now, in order to see this button, the current user / user role must have the 'administer users' permission.
In our projects, we have 'User administrator' roles who can only create / edit users of certain roles thanks to the 'Administer users by role' module. But right now its not possible to grant them the permission or to let them see this button without given them the god-like 'administer users' permission. We cant allow that permission because user managers must not be able to touch administrator roles in our projects.
So maybe either add a custom permission for this module, and use that (resend_register_mail/resend_register_mail.module line 39), or otherwise: check if administerusersbyrole module is enabled, if so, check if the current logged in user has permission to edit users of the role of the current user edit page, and if so, button should be visible.
Most easy way would be to add extra permission I guess.
Active
1.0
Code
Tried to create a patch for this. This creates a new 'Resend registration / welcome email' permission and shows the button on the user edit page based on that permission.
✨ Add permission for resending emails Needs review would solve this I believe, since it provides a separate permission so users do not need to have permissions to edit users.