Anonymous Date Reminder re-factors the Date Reminder module to allow anonymous visitors to request an email reminder to be sent at a specified time before an event. Generally these would be calendar events, but any node type that has a date field can support reminders.
Please note that this module is not compatible with Date Reminder. You cannot have both installed on your site at the same time.
Features
How this module differs from Date Reminder
This module does not integrate with Drupal's user system. It does not link reminders to users, it allows anonymous visitors to request reminders. In addition to the above change, this module:
Shows tabs only to users with the permission to view all reminders on a node.
Shows 'Send test email' only to users who can administer anonymous date reminders.
Allows reminder form to be displayed in a table and as unformatted fields
Creates a block that can be used to place the reminder form in a region using the block ui
Apart from the above, this module uses the code from and stays true to the original Date Reminder Module. The information below has been taken from the Date Reminder project page and changed where appropriate.
When reminders are enabled for a node, anonymous visitors can request reminders to be sent before each occurrence of the date/time. The visitor specifies how long before the date/time to send the reminder.