Features:

/trial switch adds the ability to see how the buffer looks before sending it
/v switch adds verbose option – off by default
/nr switch turns off initial receive after initial connect – HTTP services don’t send and initial response, Mail services do
The /nr switch fixes the effect of HTTP timeouts when sending GET strings
/dr adds double LF/CR’s to buffers(useful for GET requests) off by default

Usage:

blast xxx.xxx.xxx.xxx port startsize endsize /t rcvtimeout /d senddelay /b beginmsg /e endmsg /noret

Examples:

blast 134.134.134.4 110 600 680 /t 7000 /d 300 /b user
blast 134.134.134.4 110 600 680 /t 7000 /d 300 /b user /e endchars
blast 134.134.134.4 110 600 680 /noret

/t == timeout delay in milliseconds to wait for server response
/d == delay before each send
/noret means to send raw data with no newline chars that a pop server expects at end
/b is a way to add cust text to begin of buf
/e is an alternate way to end each buf
/v switches on verbose output – off by default
/nr turns off initial receive after initial connect (useful for HTTP GET)
/dr adds double LF/CR’s to buffers (useful for HTTP GET)

You can read more and find Founstone Blast for download here:

Foundstone Blast v2.0