Certain consumer ISPs can (and do) block connections to their mail servers during the bulk checking process.
These will result in an Unknown status.
If your list contains many of these then we can offer a refund if you are not satisfied.
Modified on: Wed, 29 Mar, 2017 at 12:08 PM
Certain consumer ISPs can (and do) block connections to their mail servers during the bulk checking process.
These will result in an Unknown status.
If your list contains many of these then we can offer a refund if you are not satisfied.
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