Hi, I'm looking for a mail sender with multi-threaded functionality that will send mails from the web mail client rather than SMTP, in other words, a mail sender that can send mails from popular providers without displaying SMTP headers. I've never done this before so I don't know which webmail would be best suited for this sort of thing but I'm looking into using the popular providers (hotmail, gmail, yahoo, aol). Anyone have any idea which provider won't prompt you for phone verification as long as the account has already been phone verified? I was thinking to use 1 proxy per 10-20 sending emails although I'm flexible in that respect. Anyone have any idea if this is doable?