Mass electronic messages or “mailbombing” (sending mass unsolicited mail or deliberately sending very large attachments to one recipient) are prohibited. Spamming, sending unsolicited commercial email messages or unsolicited bulk email to advertise, promote, offer, sell, or buy any goods or services, including pyramid schemes, raffles, contests, feebased games, chain mail and junk mail, charity requests, petitions for signatures, political or religious messages, for any business or individual, is strictly prohibited. Such messages may only be sent to those who have explicitly requested them (“optin”). The Service may not be used to collect responses from unsolicited email sent from other email or network services. You are also prohibited from sending the same or substantially similar unsolicited email message, whether commercial or not, to fifty or more recipients without written permission from the Provider. In the interest of maintaining network performance, you should not send unreasonably large electronic mail attachments. You are prohibited from running programs designed to defeat network inactivity timeouts. In response to a complaint, the Provider has the discretion to determine, from all of the evidence it receives, whether the intended recipients were from an “optin” email list.