They had previously defended their action as a legitimate marketing campaign, but after coming under fire from the press, anti-spam organisations and irate Internet users, they decided that spamming was perhaps not the best marketing approach they could use to sell their anti-spam product.
The company operates a challenge-response system used for sorting legitimate mail from spam; messages sent to SpamArrest clients require verification before delivery. The company had used the email addresses of people sending mail to their clients in their spamming campaign, in what some have described as a "ridiculous" and "ironic" action.
The apology was posted on the front page of the company's website overnight. It read: "Recently we have received some inquiries regarding a mailing we delivered to some verified users of SpamArrest.
"While this contact was completely covered by our privacy policy, our customers concerns come first.
"Because of this, SpamArrest has ceased sending such solicitation and will not send unsolicited bulk email again. SpamArrest apologises for any inconvenience this action may have caused anyone".
heh. Obvious.