From the doc: ' Avalanche is a program you use to bomb someone's e-mail address. It was made to with 2 objectives in mind: anonymity and speed. On average, Avalanche can send about 20 e-mails in 5-7 seconds using 5 clones and running on a 28.8k connection. That's almost 3 times faster than Kaboom! What's more, Avalanche will include fake mail headers which makes it seem like the mail did NOT originate from you. Cool eh?' ... Sends 20 emails in 5-7 seconds using five copies running on a 28.8Kbps connection. Includes fake mail headers.