Is this doable? And I mean new data. Or do you always keep this far away from each other on different servers?
sure you can...as long as your platform is capable of seperating it and sending to individual domains accordingly. If you can't do that then what kind of results would you expect to get?
I really don't know I heared or speculated GI mailing to bring on more heat which kind of counteracts with the whole reputation building going on with the Big4 but have to say up until now my experineces differ. I have heared somebody say the sentence mailing GI will bring down your senderscore, but I have might of understood that wrong. And for what I am using right now a platform would be an overstatement and you probaly wouldn't be into mailing for what I acall a good days revenue ;-) but thanks
Mailing GI is crucial for an increase in senderscore... there are much more monitoring seeds in GI than Big 3, so if you just mail hotmail, etc. you won't see much of a senderscore. Senderbase confirms this as well... I can mail on ranges with Yahoo, etc. and senderbase doesnt even show daily mail usage loads or is able to move the IPs out of neutral status... could just be my data doesnt have any monitoring seeds in it, though... Good GI is an important part to warming up ranges and sustaining good Big 3 delivery... a legitimate mailer's real database wouldnt consist of 100% Yahoo or 100% SBCGlobal... the ISPs are smart enough to detect if that's what you're only mailing.