|Don't ask to ask, just ask|
Does anyone here use Qmail on a linux server? If so, all it would take is to copy the 58,000 email addresses into a text file, one address per line, place it on the Qmail server as a mail list, and then bounce a generic email off the list. Everyone would receive the same message (not personalized) but it would be very efficient and only to them (like bcc:).
I have my own box here at home, and I suppose if folks trusted me, I could send them out from here.
Qmail allows mail lists for its user accounts (as I suppose other mail programs do as well). In Qmail, it is nearly as simple as this: adduser perlmonks, copy text file into perlmonks home directory as "newslist", then write an email to "email@example.com" and watch the mail go out. (No guarantees that I'm not missing a step or two, but it's about that simple if qmail is already installed and running.)
Features of Qmail, including the mail list (for which there is no size limit), can be found here: http://cr.yp.to/qmail.html. According to the statistics there, it might take under two hours to send the email out to all 58,000 addresses.
UPDATE: On second thought, I am remembering that I am not in a good position to send out bulk emails like this. Someone else would have to do it from a more trusted IP address. You see, I am in Taiwan, and many ISPs seem to block entire IP address ranges for Taiwan, as apparently much spam and mischief originates here. In other words, much of what I would send from here might not be delivered, or it would land in the "spam" box. But the Qmail solution would still be viable if used from a trusted source. ~ Polyglot ~
In reply to Re^3: Status of Recent User Information Leak (mass e-mail)