InterServer shared hosting offers guaranteed email delivery of valid, non spam, and non bulk emails through the shared hosting service with the addition of compromised email detection and spam blocking. A compromised email account will be automatically detected preventing problems such as IP blacklisting. Here is what InterServer offers:
InterServer provides easy-to-understand non-delivery reports (NDRs) when email is rejected, helping users resolve their own delivery challenges. A link provided in each NDR takes the user to an “Insights” page where they review all of the email sent from their address as well as their responses.
Email used under normal circumstances will be sent from non blacklisted ips, which constant monitoring once all spam checks have passed. The guaranteed email delivery must pass all the anti spam checks. Email deemed spammy or abusive will bounce to the sender with the error message.
Bulk email, mailing lists and email considered abusive, spammy, or not following generally accepted email practices. A high bounce rate, such as emails sent to non existent would be considered abusive.