Security best practices (and indeed the NIST 800-53 security controls) require users who have not used a system in a defined period of time to be deactivated (blocked, in Drupal parlance.)

This module allows the administrator to specify the number of days before a user is deactivated, and when they're unblocked how long that unblock lasts before they are re-deactivated.

Post-Installation

After installing, go to Configuration > Users > Deactivate users and configure as needed. The time to actual blocking of a user is "Inactivity Limit" + "Grace Period". Some sites set it as 85 and 5 to achieve their required 90 days blocking. Be sure to personalize the email templates for your site.


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