Reports: Definitions for inbound, outbound, and internal mail

Some Gmail reports have details about inbound, outbound, and internal mail.

Notes:

  • Messages sent and received with SMTP relay service aren't included in the message totals in aggregate reports.
  • An associated domain is any domain or subdomain of the parent domain that is set as one of these:
    • Primary domain
    • Secondary domain
    • Alias domain

Message type definitions:

  • Inbound—Messages received by users from senders outside the set of domains for your organization.
  • Outbound—Messages sent by users to recipients outside the set of domains for your organization.
  • Internal
    • Sending—Messages sent by users to recipients within the set of domains for your organization.
    • Receiving—Messages received by users from senders within the set of domains for your organization.

      Important: Messages must be authenticated by either SPF or DKIM to be treated as internal. This applies even to messages from an associated domain. If a message sent from an associated domain does not pass either SPF or DKIM, it's treated as an external message.

  • Delivered—Messages delivered directly to/from Gmail, or to the default mail route (for non-Gmail mailbox users). Rerouted messages that are delivered are not defined as delivered because Gmail is not the final destination.
  • Rerouted—Messages rerouted to another server from Gmail.
  • Rejected—Messages that are rejected. Reasons for message rejection vary by direction (inbound/outbound). Rerouted messages that are rejected are not defined as rejected because rerouting happens before rejection.
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