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Today's increasingly aggressive ISP blocks have made traditional SMTP servers all but obsolete for high-volume permission mailings. To successfully reach their audience, senders need a new breed of SMTP server, engineered around the concept of deliverability rather than brute force. These nimble, high-deliverability SMTP servers know how each ISP likes to receive incoming mail and include critical deliverability features such as virtual routing, differentiated sending and support for emerging authentication standards.
By employing virtual routing, you can separate your regular mail from your high-volume email list and email marketing mail, which is more susceptible to being blocked by corporate and ISP spam filters, providing optimized delivery for all classes of email.

High-deliverability SMTP servers also allow you to tailor your deliveries in accordance with individual ISP preferences and to employ leading authentication standards, which are increasingly being adopted by ISPs to separate legitimate mail from spam. Live updates keep you current with the latest best practices and domain policies, maximizing your deliverability today as well as tomorrow.
About SMTP Servers
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