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The Insert X-Header action adds an X-Header to the message header before sending a message to the intended recipients. An X-Header consists of a name field and a body field, which can be customized according to your requirements.
Insert X-Header is one of the "Modify" class of actions.

Procedure

  1. Select Insert X-Header from the Modify section.
  2. Type the X-Header name and value.
    Note
    Note
    Do not use or start your X-Header name (case-insensitive) with the following since they are reserved for Cloud Email Gateway Protection:
    • X-TM
    • X-MT
    The reserved X-Headers might be adjusted dynamically if necessary.