slot@mashica.com is a closed but unmoderated mailing list on the topic of slots. The list is "closed" because you must be a registered user to receive the list. The list is "unmoderated" which means anyone can join or leave the list at any time.
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To join the list:
send an e-mail to <slot-request@mashica.com>, containing:
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in the message body. Luisa, the mashica server, will respond with a mail message indicating the success or failure of your attempt.

To leave the list:
send an e-mail to <slot-request@mashica.com>, containing:
UNSUBSCRIBE
in the message body.

If you have any problems concerning the list, getting in, or getting out, please contact <challenge@mashica.com>