it means the MailChannels system has detected extensive abuse originating from your email account.

Examples of abuse include:

• Spam email
• Bulk email
• High complaint rates
• Lots of invalid recipients

What can I do to unblock my account?

Please file a support request by following the instructions at:

https://support.appliedi.net/index.php?/support/Knowledgebase/Article/View/1185/315/mailchannels–how-to-submit-a-false-positive-or-block-removal-request