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ESMTPExtended Simple Mail Transfer Protocol
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message size extension, allowing communicating ESMTP sessions to
EIMS software is standards- based supporting POP3, APOP, SMTP, ESMTP, Ph and MIME protocols.
Even sites with modest workloads will appreciate LSMTP's "install and forget" design, graphical real-time monitor and configuration utilities, autopilot operation, full support for ESMTP (the Internet's Extended SMTP mail protocol) and, of course, the lightning-fast delivery times.