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An SMTP mail server is an application that handles and delivers email. 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.

Features provided by high-deliverability SMTP mail servers:
- Virtual Routing: Separate your regular and transactional mail from your high-volume email list and email marketing mail that is more susceptible to being blocked by ISP and corporate spam filters
- Differentiated Sending: Adjust and optimize speed, connections, timeouts and routing options per domain, in accordance with each ISP's policies and preferences
- Authentication: Authentication standards, such as Sender ID, SPF and DomainKeys/DKIM improve your deliverability as these standards are increasingly adopted by ISPs
- Live Updates: Keep your system current with ever-changing domain policies, including bounce filter definitions and recommended domain throttling configurations
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HDMail is a high-deliverability mailer, providing unsurpassed reliability, performance and deliverability in today's fast-changing email industry. HDMail maximizes your delivery rate while streamlining and simplifying your email operations. |
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