PowerMTA also gives you the ability to free up resources for high priority, time sensitive campaigns on demand via breaking connections of lower priority queues. The result is improved deliverability, and fewer reputation issues. PowerMTA, crafts granular policies which can based on the multiple categorizations. The benefit of using delivery policies is that you can be a good neighbor by proactively complying with recipient spam policies. The most recent version of PowerMTA v4.0 allows for more granular delivery rate support down to an X messages per second basis. PowerMTA allows you to define and apply delivery policies at various levels: globally, per recipient domain, per campaign, per client, per “VirtualMTA”, etc. Number of delivery attempts per hour (throttling).AOL, Gmail, Yahoo, Hotmail), each of whom have different policies and optimal settings for parameters such as: This is particularly relevant when delivering to large ISPs (e.g. Regarding SMTP Delivery, responsible senders will apply appropriate delivery settings for each recipient domain based on the domain’s published (and/or unpublished) spam policies.
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