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How does RPost deal with spam filters?

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RPost Registered Email messages should not be flagged as spam or as containing a virus any more than a regular email.  In fact, through many of our partnerships, RPost is actively becoming ‘white-listed’ with many of the large corporate ISPs, Managed Service Providers and Email Service Providers. In the event that a message is rejected by a spam filter outright, the Registered Receipt email will indicate “Delivery Failure.” If a message is delivered but classified as spam by the filter, the Registered Receipt email will indicate “Delivered to Mail Server.” In this case, the Receipt enables the sender to retain proof of delivery for that email.  This is important if the sender needs evidence that they fulfilled their requirement to send a notification.