John Jetmore's cool tool " Swaks ," is billed as a "Swiss Army Knife for SMTP." I've written about it here on Spam Resource before , as I find it to be amazingly useful for email-related testing. And Matthew Vernhout (of EmailKarma fame) has taken it to the next level; he has put together a Swaks guide that shows you how to use Swaks to test your email sending co…
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