New IPs are going to be watched more and regulated.
This is good news to many but a word of caution to ESPs (Email Service Providers) and companies out there that try to switch IP addresses or add new ones. Some mailers actually decide to switch IPs and abandon them once they are permanently flagged and/or blacklisted. And if you start a new IP broadcasting from scratch without any prior solid and good traffic on it, expect a poor delivery rate until you establish a REPUTATION on this IP.
As for companies that decide to take to setting up their own PHP mailer or other in house system for email marketing you should not expect great open and read rates out of the gate. I think that this actually puts more benefit on good ESPs with solid IPs and good ISP relations and reputations. It should make more marketers think twice about rolling their own email marketing solution.
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Microsoft last week verified it is significantly throttling the volume of e-mail it will allow to come into its Hotmail accounts from new IP addresses.
The admission won’t come as a surprise to many e-mail service providers. However, it will help them explain to ornery new clients why their e-mail delivery rates temporarily drop when they switch providers.
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